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2×3 magic folding cube

I’ve been interested for a while now in “magic” folding cubes, a.k.a. flip cubes. I started a screensaver project involving them, though it’s long lain dormant. The idea was (is) to display a rotating/folding cube using OpenGL, and use the 9 faces to show photos.

However, one problem with this common 2×2x2 foldcube is that the nine composite faces have aspect ratios that don’t match most photos. Six of the faces are square (2×2), and the other three have a 2/4 aspect ratio. So you end up with either large blank areas, or you cut off big chunks of the photos (typically heads and feet! :-), or you stretch them in unattractive ways.

So, can we do this kind of folding cube that has a 2/3 aspect ratio, which would fit (or much more closely approximate) the aspect ratio of portrait or landscape photos? I toyed a bit with the idea of a folding cube consisting of 2×3 subcubes. The question is, can they be hinged together in a way that allows folding so that all subfaces form suitable composite faces? Surprisingly, a suitable arrangement of hinges was pretty easy to find. It allows all 36 subfaces to be used in six 2×3 composite faces. Wow… I would have been happy with some 2×3 faces and some 2×2. But having all the subfaces uniformly incorporated into six faces of the ideal aspect ratio is better than I expected.

The only drawback of this 2×3 folding cube with respect to the 2×2x2 one is that it can’t (I don’t think) be folded “through”. That is, you can fold it “inward”, and you can fold it outward, but you can’t keep folding it outward repeatedly, and get back to where you started. Unless I’m wrong.

I won’t know for sure until I find some physical cubes to try it with. Maybe some alphabet blocks? Or maybe I need to cut some out of wood…

What would be really fun is to finish the above screensaver project, in such a way that the cubes and their hinges are configurable (ideally, at run-time). Then I could try different hinge configurations and see how well they work. Maybe even try a 2×2x3 shape! 12 subcubes, 72 subfaces; What sort of composite faces? I’m sure there could be two and maybe even four 4×3 faces…

Maybe now that O3D has been launched, I should take this opportunity to try out O3D as a convenient platform for 3D graphics. I don’t know though… as I look into O3D in some depth, it doesn’t look any more convenient than OpenGL. Plus, being browser-based, it probably won’t be able to do screensavers, nor read photos from a local folder. We’ll see…

Pray for our President

InaugurationWe pray that President Obama and Vice President Biden fulfill the oaths of office they took using God’s Word and God’s name. Let us all pray for them and the whole administration to look to our Lord for wisdom and may the Lord of all creation protect them and their families.

Here is Albert Mohler’s prayer for President Obama. It is a great place to start.

waltzing my tilde in TeX

I recently had the need to typeset a tilde in a TeX document… it happened to be part of a URL. As TeXies know, a straight tilde in a TeX file means a non-breaking space. So you have to escape it using backslash. But \~ means “put a tilde diacritic over the following letter.” So you have to separate it from the following letter using empty curly braces {}: \~{} (which looks like a pirate emoticon). But you still get a raised tilde, instead of the vertically-centered tilde that is now expected when showing computer data.

There were some helpful examples on the web, but they seemed to rely on a LaTeX package, url.sty, and we’re not using LaTeX. I tried adapting the code in url.sty to plain TeX, but I don’t know TeX and LaTeX well enough to do that. Finally I came across a page called Moving the tilda [sic] to the correct height for a url in latex, which ironically showed how to do it without LaTeX:

\def\urltilda{\kern -.15em\lower .7ex\hbox{\~{}}\kern .04em}

(This defines a macro called \urltilda, which is what you would use in the TeX code.) This macro didn’t quite work for me though, because if you’re following Chicago Manual of Style for line-breaking URLs (a whole ‘nother topic…), you will sometimes break a line right before a tilde… and if you also kern that tilde to the left, you get a line that starts to the left of where it should. So… as I don’t see a kerning problem with the tilde, I removed the \kern commands and just used the \lower command:

\def\urltilde{\lower .7ex\hbox{\~{}}}

I’m not sure whether or why the \hbox is necessary. In any case, the above \urltilde seems to work fine, and it’s relatively simple.

3 atheist witnesses

1) Recently I heard from my dad about an article in Times Online: As an atheist, I truly believe Africa needs God. The author, who grew up in Africa, makes the astonishing admission,

Now a confirmed atheist, I’ve become convinced of the enormous contribution that Christian evangelism makes in Africa: sharply distinct from the work of secular NGOs, government projects and international aid efforts. These alone will not do. Education and training alone will not do. In Africa Christianity changes people’s hearts. It brings a spiritual transformation. The rebirth is real. The change is good.


The Christians were always different. Far from having cowed or confined its converts, their faith appeared to have liberated and relaxed them. There was a liveliness, a curiosity, an engagement with the world - a directness in their dealings with others - that seemed to be missing in traditional African life. They stood tall.

Unlike “new atheists” Dawkins and Hitchens, who liken all religion to smallpox, Matthew Parris

Christianity…smashes straight through the philosphical/spiritual framework I’ve just described. It offers something to hold on to to those anxious to cast off a crushing tribal groupthink. That is why and how it liberates.

I wonder how close this puts Matthew to conversion? Concluding that a belief system is beneficial for Africans doesn’t necessarily imply that its beliefs are true. It would suggest that Christianity would be beneficial for Matthew as well, but in this article he argues based on particular characteristics of African traditional culture, so he may not see the benefit as carrying over to himself.

We’ll see. We’ll pray. In any case, it’s amazing to me that a “confirmed atheist” gives so much credit to Christianity based on what he has observed in Africa. A lot of people talk (like Anthony Flew) about following the evidence where it leads; not so many are willing to do that when it leads contrary to their allegiances.

HT also to Pyromaniacs for the link.

2) Raving atheist blogger becomes Christian:

http://ravingatheist.com/2008/12/christ-is-the-lord/

3) Mortimer Adler - engaged in a “decades-long crusade against Darwinism”, and finally became a Christian at age 84.

For now: http://creationsafaris.com/crev200901.htm#fcsotm
If it’s gone, you could try here. http://creationsafaris.com/wgcs.htm

More in-depth: Dr Mortimer Adler’s life-long ‘crusade against evolution’

A few other crafts to show

This is another blog post I started ages ago and am finally getting posted.

Lars made this table for a nephew's dollhouse
Lars made this cute little table for his nephew’s doll house. Nice and rugged for a boy! :)

Crocheted rug for our new master bedroom
I finished crocheting this rug in February just in time for us to move into our new bedroom!

Dishcloth
Crocheted hotpad. Still working on making them square.

washcloth for baby
Crocheted washcloth. Ditto above. :)

Diaper cake made for Rachel and Mark
Diaper cake for Ken and Jessica's baby

These are two diaper cakes made for friends whose babies are now over a year old. Did I mention I started this post ages ago. :o

ice cream cone!

Since it is so cold out….

25 motif challenge #19

Eliz Davis’ Adaptation of an Anna Valeire Pattern

Tattingchic had a photo of her yummy sherbet on her blog a while ago. Here is my version which I made for my daughter a few months ago and am finally blogging.


I’m going to try to finish my challenge in the next 3 days. Most things are done, just need to blog them. Haven’t had extra time and energy for this lately with the baby coming. She’s worth it, though! :)

Mary Did You Know?

Powerful song for the Christmas season. Merry Christmas everyone!

Christmas Wordles

Wordle: christmas

O come, let us adore Him!

(Some other wordles I made: here. The ones in Swedish are by a different Lars.)

Welcome home Keziah!

Great news — Kathy and Keziah were released from the hospital yesterday evening!

There has been a steady stream of step-by-step answers to prayer over the last three and a half days. See below for details. Again we appreciate those who have been praying us through.

We have 40 photos uploaded to our web gallery and no doubt will be adding more in the coming days.

… Your children [shall be] like olive plants
Around your table.

Psalm 128:3

How blessed we are to have this new little olive fruit!
The Lord is good… and his mercy endures forever.

Love,
Lars and Kathy
Anna, Jo and Keziah

Friday:

  • Epidural administered without as much difficulty as last time.
  • Protection for Kathy during an unexpected allergic reaction to an antibiotic.
  • Mommy’s body having recovered from C-section #2 enough to handle #3.
  • Lars’s parents nearby to take care of Anna and Jo over the weekend while Mommy and Daddy were busy.

Saturday:

  • Steady recovery of mobility and decreasing pain afterwards - Kathy had less pain than the previous two times.
  • Kathy could not go to visit Kezzie in the nursery Friday afternoon or evening, but was mobile enough to be able to go starting Saturday morning.
  • Kezzie initially was “retracting” and “grunting” (having to work too hard to breathe), but stopped retracting on Saturday morning, and stopped grunting by Saturday evening.

Sunday:

  • She wore an oxygen tube for the first couple of days, and the nurse said she would not be discharged until 24 hours after she was no longer dependent on oxygen. Thankfully, Sunday morning Keziah was allowed to have the oxygen tube removed.

  • Saturday night, despite improvement, the nurse said Kezzie’s respiration was still to fast for them to let her out of Special Care. Apparently that kept improving too — she was released from the nursery Sunday afternoon.

Monday:

  • Like her sisters, Keziah had a bilirubin count (jaundice) that was high enough to cause concern: the doctor would not let her be discharged unless her count was 12 or below at 5:00pm today. We kept her in the sunlight from the window, and tried to keep flushing out her “bilis” as much as practical. When 5:00 rolled around, her count was 10.6.

How happy we were this evening to get the discharge order for Mommy and baby, and bring them both home from the hospital!

Keziah Ruth is born!

Our third daughter, Keziah Ruth, was born yesterday at 1:16pm. She weighed 7 lbs even, and is 19″ long.

Kathy is doing fine, and was already up and walking a little, the morning after the C-section.

Kezzie has had some trouble transitioning to breathing air… not unusual for babies that are not full-term (she was 2.5 weeks early). So Keziah has been in the special care nursery. The pediatrician says she either has premature lung disease, or just needs to clear the fluid out of her lungs. Either way, she could be out of the nursery in a day or two. Righteous friends[1], we would appreciate your prayers for her.

We have some pictures posted in our November 2008 gallery album, and we will continue to add more there.

[1] I had a friend Peter N. who used to tell people not to pray for him, unless they were right with God. He figured that since the Scripture says “The prayer of the righteous man availeth much”, the prayer of the unrighteous was ineffective and possibly worse than no prayer at all.

Fiat iustitia, et pereat mundus

Lars here, putting in my 2 cents’ worth on Come What May. (See Kathy’s post.)

I wanted to add that this film challenged, convicted, and encouraged me as a Christian. Although the plot centers around Roe v. Wade, abortion is not the main issue the characters wrestle with. Rather, doing what’s right is — come what may.

This is a simple message, but one that we need to be reminded of, and encouraged about. We are often told that our moral battles are losing battles, and that the wise thing to do is to compromise in order to obtain a shorter-term or a surer benefit. It’s not often enough that we see Christians modeling courageous decisions to do the right thing, however unpopular a position may be.

The story works out this principle in three radical ways that push against the flow of mainstream culture. Maybe they’re best expressed in Caleb’s closing narrative comment:

“My father was right. If you don’t believe your wife is precious, you won’t cherish her. If you don’t believe love is best when it’s pure and new, you won’t wait patiently for it. If you don’t believe the baby in the womb is the living handiwork of God, you’ll do nothing to protect it. What do you believe?”

I don’t feel like I can explain how the film presents these beliefs in a radical way, without diminishing its impact. Watch the trailers, and see if the film grabs your interest.

Must See Movie: Come What May

Lars and I watched this movie last night and highly recommend it. It tells a great story and explains the compelling arguments that would overturn Roe v. Wade.

The movie can be watched online for free probably for the next couple of days. They were wanting to extend the free screening past the original October 31 date, so hopefully it will still be showing at least until November 2. You can also purchase the movie, which would be well-worth the money.

In the meantime, enjoy the three trailers here. You can find out more about the Advent Film Group and the movie “Come What May” here.

Vote your values!

Be sure to get out and vote God’s values! Prove those pollsters wrong!

To see other great Stoplight videos, go to www.citizenlink.org

The truth about Senator Obama’s voting record against babies born alive who have survived abortions.

If you have thought about voting for Senator Obama, think again.

Go to these websites to find out more:
http://BornAliveTruth.org/
http://www.citizenlink.org/dailybroadcast/A000008451.cfm

Dad’s tribute to his sister

At Aunt Ruth’s memorial service, my father shared the following tribute to his older sister:

A TRIBUTE TO RUTH STRATTON

Delivered at the Memorial Service in her honor on October 11, 2008
Gilmore Park United Church
Richmond, B.C.

We thank all of you for coming—on a busy and beautiful holiday weekend—to honor the memory of Ruth Stratton.  Welcome Ruth’s Air Canada colleagues, members here at Gilmore Park, friends from St. John’s Richmond and St. John’s Shaughnessy and others of Ruth’s friends from the community.  I’m Dave Partridge, Ruth’s only sibling and little brother.  Chatting one evening last August during dinner in Vancouver’s beautiful Stanley Park, Ruth and I were reminiscing about our years of traveling, places we had seen, experiences we had enjoyed, our careers and our families.  Near the conclusion of that conversation, Ruth smiled and said, “It’s been a good life.  And I’ll take this latest challenge, be positive and make the best of it.”  And she did. 
    The challenge was a malignant brain tumor.  It first manifested itself in June with some minor speech problems just about the time she and her good friend Gladys Lund were planning an automobile trip to Alberta.  They took that trip and shortly thereafter the brain tumor diagnosis was confirmed and radiation treatments began to shrink the tumor.  Ruth’s speech problems cleared up and by the time of my visit in early August, she was enjoying some good days.  But the doctor told her she could expect to have perhaps only a few months, maybe a year to live.  As it turned out, she had less than two months. 
    But in those two months, she had some happy experiences:  including  a dinner with several of her travel industry colleagues which her good friend Marilyn Byfield arranged.  Ruth met her challenge and remained positive.
    It was Ruth’s nature to be positive.  So she had lots of friends around the world.  One of her longtime and closest friends came a long way to be with us today:  Jane Mills from England.  Another close friend, Pat Collins from Toronto, is unable to be here.
    Ruth regarded herself as particularly fortunate because she had two families.  The first was the family in which she and I grew up in—the Partridge family of Hamilton, Ontario, with relatives in Toronto as well.  Now, it includes my wife, Betty, along with our daughter Laura (who is here today), her husband, Sam, and three children—all of us in South Carolina– and our daughter Kathy, husband, Lars, and two daughters in Texas who visited their Aunt Ruth just two weeks before she died.  Kathy and Lars are expecting a third daughter whose middle name—they have decided—will be Ruth!  And she could be born on Ruth’s birthday, November 7th.
    Ruth also had a second family whom she called her “Richmond family.”  Marguerite Love and Ruth met in 1955 as new employees of Air Canada (or TransCanada Airlines as it was then called).  They have been close friends ever since—supporting each other through many of life’s experiences, including the death of Marguerite’s first husband, Bob Love, and her marriage twelve years ago to Jack Raine.  Ruth’s “Richmond family” includes Marguerite and Jack and Marguerite’s two children:  Sean and his wife Penny and three sons and Maureen, husband Xavier, three sons and a daughter.  I am grateful for the love and care this family has bestowed upon my sister for so many years.
________________________________
No one knew Ruth better than Marguerite and no two friends could be more devoted to each other.  So it was appropriate that Marguerite, Jack and Sean were with Ruth when she died shortly after noon a week ago Wednesday, October 1st.
    While we were making arrangements for this memorial service, I asked Marguerite to give me her words to describe Ruth.  She had many and, without hesitation, she said, “Ruth was so loving and thoughtful, always putting everyone else ahead of herself.  She was a true friend.”
    In the days since Ruth’s death, Marguerite has received dozens of emails.  Here are a few of the words and comments which friends and family members have sent to describe Ruth:  good, caring, fun to be with, a great friend, helpful, kind, gentle, generous, always available when needed, intuitive,  gracious.  She had integrity and was loyal.  “I was fortunate to have known Ruth,” said one email writer.  “Her memory will be a blessing.” 
    Talk about memories!  Those of us who were on her Christmas card list will always remember that beautiful picture—carefully selected by Ruth each year from among the many she took on her trips.  Her last, was that provocative photo of an old Chinese man and a young Chinese boy which she took on a trip to China a year ago with Marguerite and Jack and which she sent last December.  Photography was one of Ruth’s hobbies, indeed a passion.  From the time of her first international trip in 1953 to the coronation of Queen Elizabeth until her last camping trip with Marguerite and Jack just a month ago, Ruth loved to document her travels and friendships with photos. 
She also enjoyed woodworking and sports.  In her younger days, she was an athlete, just like our father who played football for the Hamilton Tigers in the 1920s.  Ruth was proud of her dad.  Some of you may have noticed his Tiger ring which she often wore. 
Ruth also loved music.  She sang during her teen years in the Grace United Church choir in Hamilton.  And she loved  symphony orchestras, especially the concerts of Vancouver Symphony.  She’s the one who introduced me to classical music.  Ruth was a good big sister and she had so much influence, she even had me listening to those Saturday afternoon Texaco-sponsored Metropolitan Opera broadcasts when I was still a young boy.   She was also a good daughter—caring for and taking our Mum on many wonderful trips over Mum’s three decades of widowhood.
_______________________________
Ruth loved the travel industry and her thirty-six years at Air Canada before retiring in 1991.  She also enjoyed mentoring young women entering the industry and the opportunity to play a role in developing and documenting the efforts of the travel organizations of which she was a member and for which she worked so hard:  B.C. Women and Travel, Vancouver Women and Travel, and the International Federation of Women’s Travel Organizations.
In that long list of words describing Ruth, I did not see organized.  Well, she was!  Whether it was preparing a dinner for guests, documenting travel club histories, making out a shopping list, organizing an event or trip, Ruth was the ultimate planner:  precise, detail-oriented, thorough.  But nobody’s perfect!!
Many years ago, Ruth & I hooked up in St. Paul, Minnesota at one of those IFTWO conferences.  Since we both loved baseball, Ruth said she would buy tickets for us and one of her friends to see a Minnesota Twins game.
Come game day, we met at her hotel in St. Paul and headed by city bus for Minneapolis.  Not long before the bus reached the interstate for the ride between the twin cities, I began to wonder if Ruth had remembered the tickets.  But, given her planning skills I thought:  I know Ruth.  If I dare ask her, she’ll give me one of those irritated, “trust me” looks.  She’ll be insulted and I’ll feel bad.  But I couldn’t help myself.  So I finally worked up the courage, glanced at her, and as nonchalantly as possible, asked, “You have the tickets?”  She bolted straight up, almost ran down the aisle and told the bus driver, “We must get off the bus!”  We did, and being several years younger than my sister, I was appointed to run back to the hotel.  I found those tickets right where she said they would be…in her other purse!  And yes, we did get to the game.
________________________________
Ruth’s last couple of years were not easy.  She had that bout with lung cancer last year.  Then shortly after radiation treatments, she flew to Denver for my daughter Laura’s son’s wedding.  Then in August of last year, some of our family were in Hamilton for our cousin—Bob Partridge’s—wedding.  Before the wedding, Marguerite, Pat Collins, Ruth, Betty and I, Laura, her girls, and Lindsey’s fiancé, Rob, met for lunch in Hamilton.  It was the last time we were all together—and it was at this same hour—fourteen months ago today. 
My family and I—along with Marguerite and her family—appreciate your sharing this memorial service with us.  Your presence has eased and comforted our sorrow.  After Ruth’s Godson, Sean Love, has shared some scripture and his thoughts with us, we hope you will join us for a time of fellowship at the reception.
Ruth would be grateful for your presence as well.  She would be humbled—perhaps a bit embarrassed—by all the kind words and attention but she would not want us to be sad.  As she told me that evening two months ago at the Tea House in Stanley Park, she appreciated the life filled with wonderful friends and colleagues and the variety of experiences God had given her. 
____________________________
Intended or not, we all leave a legacy.  As the comments in so many phone calls and emails have indicated, my sister’s legacy, I suppose, is the good example of why it is important to be interested in and care for others and of what it means to be a true friend. 
In one of several emails which Marguerite forwarded to us, my wife, Betty, found one extraordinary thought which she suggested I might want to include in this tribute.  I agreed because it is beautiful and appropriate.  It came from Ruth’s friend, Lynn Hamilton, in Milwaukee.  Said Lynn, “Someday we can remember Ruth not with tears in our eyes, but with laughter in our hearts.”  Ladies and gentlemen, let us not be sad for too long.  Let us, instead, experience peace, encouragement and determination in our own lives by remembering Ruth with laughter and appreciation in our hearts.

Remembering Aunt Ruth

PhotoMy Aunt Ruth, my father’s sister, was always a lovely and fun person to talk to and be around. Even though we lived on the opposite side of the continent from her, we saw her as often as we could and corresponded with her regularly. Aunt Ruth was well-traveled, being an employee of Air Canada and also part of a women’s travel organization that took her to the most interesting and exotic spots on the globe. She was also a wonderful correspondent. She always sent letters for birthdays, anniversaries, and just whenever. It was always fun exchanging email with her with the little pictures and cartoons she would add. :)

About three weeks ago, we traveled to Richmond, BC, to visit Aunt Ruth. She had been recently diagnosed with a brain tumor and we wanted to be sure to get a chance to see her. We had a lovely time with her and were able to spend about a week there.

We were shocked when she had to go to the hospital less than a week after we left, and two days later died in the hospital. It is still hard to believe that we saw her doing so well just three weeks ago. But we are grateful that the Lord spared her the difficulty down the road that would have been associated with the tumor.

We will miss Aunt Ruth, but are confident we will see her again “when we all get to heaven.” This old hymn is what our girls started singing when we told them that Aunt Ruth had passed away. The girls joy over meeting Jesus and our loved ones in heaven made me cry. “What a day of rejoicing that will be. When we all see Jesus, we’ll sing and shout the victory.”

Sing the wondrous love of Jesus,
Sing His mercy and His grace.
In the mansions bright and blessed
He’ll prepare for us a place.

Refrain

When we all get to Heaven,
What a day of rejoicing that will be!
When we all see Jesus,
We’ll sing and shout the victory!

While we walk the pilgrim pathway,
Clouds will overspread the sky;
But when traveling days are over,
Not a shadow, not a sigh.

Refrain

Let us then be true and faithful,
Trusting, serving every day;
Just one glimpse of Him in glory
Will the toils of life repay.

Refrain

Onward to the prize before us!
Soon His beauty we’ll behold;
Soon the pearly gates will open;
We shall tread the streets of gold.

Refrain


Here’s a link to the obituary in the Vancouver Sun and Richmond newspapers.

Not long ago I released version 1.0 of maze3dflyer.

Yesterday, the NeHe website — a well-known gathering point for OpenGL tutorials and demos — posted a link to it in their news blog:

Lars Huttar sent us a mail that his maze [program] is now ready for release. Check it out, it’s really fun breaking new highscores!

Cool! We’ll see what this does to traffic for the site… I hadn’t had many downloads yet.

The blurb…

maze3dflyer is:

An OpenGL graphics demo. It generates a random 3D maze with some configurable properties, and displays the maze using textured 3D graphics. You can “fly” through and around the maze using standard movement controls.

Platform

In the initial release, the project is developed for Windows / Visual C++. A Linux port is planned.

Features

  • random 3D maze generation, with sparseness constraint to make maze visually “legible”
  • textured 3D maze rendering
  • keyboard-controlled navigation (”flying”) around and through maze
  • collision detection prevents flying through maze walls
  • code demonstrates use of quaternions for rotation
  • maze solution timer and high score list
  • optionally display FPS, help text, and status info
  • nice skybox

Planned features

  • port to Linux
  • make into screensaver (for Windows and xscreensaver)
  • autopilot to fly through maze
  • objects in maze; let player drop breadcrumbs
  • pictures on internal walls, with images from the web
  • windows to look out?
  • on higher levels, add enemies and powerups
  • skyboxes made from Stellarium landscapes
  • provide run-time control of settings
  • many other ideas; see ideas-todos.txt

If you try it out, please leave a comment. I’d be happy to hear if someone enjoys it.

Lars

25 motif challenge: 16-18

Hello fellow tatters! It has been a bit quiet on the tatting scene around here lately. We’ve had a lot going on. More on that later. :)But I’m finally ready to share three more bits of tatting for the 25 motif challenge.

The first is a snowflake pattern by Ben Fikkert. It is his leaves flake. This one was given away at a Christmas gift exchange. I used two quilting threads together to make this one.
Ben Fikkert's leaves flake snowflake

The second is a pattern by Teri Dusenbury called Snowburst. She had such great instructions on this one and it helped me learned how to do front side/ back side tatting right for the first time! Thanks, Teri! This snowflake went to my Christmas ornament tatting exchange partner.
Teri Dusenbury's Snowburst snowflake

This adorable angel is a pattern by Lenore English. I want to make this again. I love the lacy wings and the curly “hair.” What a great pattern.
Lenore English tatted angel


Well, folks, that’s it for now. Hope to be back soon with some more.


Besides Expelled, we’ve seen a couple of other movies (on DVD) in the past month, and we’re trying to be good and jot down our impressions as we go along.

Akeelah and the Bee: Based on a true story about a girl from an inner city LA school who ends up in a national championship spelling bee. We recommend it. There are some rough spots early in the film, characteristic of the tough school where the story begins. But it gets better later on. And some characters and situations change for the better in surprising ways. Keep a few kleenexes nearby… but it’s not a heavy movie. The values are generally good, though not explicitly Christian.

Hoodwinked: We had read some good things about this computer-animated comedy about Little Red Riding Hood, but we’re not sure we would recommend it to our friends. There’s nothing terribly objectionable about it, but not much edifying either. There is some sassiness from youngsters, and brief nasal humor. The story is quirky. Some of the quirkiness works as creative or funny; other parts are merely off-the-wall. On the good side, the detective story references are fun, and the multiple-viewpoint storytelling gives some good “aha” moments.. Nevertheless, we would not recommend the film for children, as the sarcasm and post-modern satire is inappropriate for their age level; and for adults, there is probably a more rewarding way to spend your 90 minutes.

Previews: we saw previews for Kung Fu Panda and Wall-e, which both look pretty enjoyable, so we’ll be keeping an eye out for them — in a year or so, after they’re out on DVD. :-)

There was also a preview for Prince Caspian, which we may go and support with our box office dollars.

According to a new National Geographic article, Lizards Rapidly Evolve After Introduction to Island,

Italian wall lizards introduced to a tiny island off the coast of Croatia are evolving in ways that would normally take millions of years to play out, new research shows.
In just a few decades the 5-inch-long (13-centimeter-long) lizards have developed a completely new gut structure, larger heads, and a harder bite, researchers say.
In 1971, scientists transplanted five adult pairs of the reptiles from their original island home in Pod Kopiste to the tiny neighboring island of Pod Mrcaru, both in the south Adriatic Sea.
Genetic testing on the Pod Mrcaru lizards confirmed that the modern population of more than 5,000 Italian wall lizards are all descendants of the original ten lizards left behind in the 1970s.

Of the three changes mentioned, the harder bite, the article says later, is “powered by” the larger head. Together, the bite power and the head size sound like just more of the usual Galapagos finch beak effect: shift in (average) size of a body part among a population. This kind of change is consistent with microevolution, for which there is plenty of evidence already, even if the speed of this particular change is “shocking.”

But the new gut structure is intriguing. If it is a result of random mutation and natural selection (RM+NS), it might be a significant piece of evidence for macroevolution observed in our time… evidence that has until now been lacking.

The article elaborates,

the lizards developed cecal valves—muscles between the large and small intestine—that slowed down food digestion in fermenting chambers, which allowed their bodies to process the vegetation’s cellulose into volatile fatty acids.
“They evolved an expanded gut to allow them to process these leaves,” Irschick said, adding it was something that had not been documented before. “This was a brand-new structure.”

There’s no dispute that major changes to the lizards’ digestive tract occurred. “That kind of change is really dramatic,” [said Andrew Hendry, a researcher not associated with the study].

So… suspending judgment on the word ‘evolved’ for now (which is sometimes merely a synonym for ‘have’), new muscles (”valves”) appeared, apparently ex nihilo. And this was, according to initial reports, a beneficial mutation. So far so good.

The next questions:

  1. How complex is the “major” brand-new structure? (I.e. to what degree does this evidence support a claim that evolution accounts for the formation of new body functions and systems?)
  2. What was the mechanism by which the change occurred?

The author of the research, Duncan Irschick at U of MA, seems satisfied that evolution was the mechanism. However, Hendry points out that the changes could be a response to the new environment without any significant genetic changes:

What could be debated, however, is how those changes are interpreted—whether or not they had a genetic basis and not a “plastic response to the environment,” said Hendry, who was not associated with the study. …
“All of this might be evolution,” Hendry said. “The logical next step would be to confirm the genetic basis for these changes.”

If these changes were a plastic response to the environment, it would imply that the potential for these gut structures has lain dormant in the lizards’ genes, unexpressed and unknown to biologists, for some time. Why would they be there? Is this a case of front-loading? Or had the genes been expressed in the past, just not during recent centuries when biologists might have noticed them?

Of course another possibility is divine intervention. Intelligent Design a la Behe says that according to the evidence, an intelligent designer must have intervened at some stages during history (and Christians believe God has often intervened in history, most critically at the Incarnation); so why not between 1971 and 2004? If this is what happened, theological questions immediately arise, such as why God would have chosen to help this particular band of 10 lizards adapt to their new home. More relevant to the present paper: how would we detect this case from the evidence? I suppose it would be the same way we detect intelligent design in general: running it through the explanatory filter. On the negative side, if the morphological changes are the result of genetic differences that appear non-specific (the target area is large in proportion to the space of possible mutations) and/or simple, we wouldn’t have justification to reach a conclusion of intelligent agency in this case. On the positive side, if the genetic changes appear to be carefully engineered (complex and specified), we could infer an intelligent cause. (I’m not taking time here to go through the whole explanatory filter.)

If the lizards’ changes do turn out to be due to changes in genes, and the genetic changes appear to come from RM+NS, what implications does this have for the theory of evolution? While it would seem to provide significant direct evidence for macroevolution, it could also seriously challenge proposed models of how quickly evolution can occur.

It would be akin to humans evolving and growing a new appendix in several hundred years, [Irschick] said. “That’s unparalleled.”

Mainstream neo-Darwinism does not propose that humans could evolve a new appendix in a few centuries. So what gives? Any way you slice it, these lizards hold some mysteries for us to ponder.

It is the glory of God to conceal a matter,
But the glory of kings is to search out a matter. (Prov. 29:2)

The lizard you may grasp with the hands,
Yet it is in kings’ palaces. (Prov. 30:28)

It will be interesting to see what further data and conclusions we are able to “search out” from these lizards in the future.

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