Polemics

The best explanation for the design of bird wings is intelligent design

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A great post from Evolution News about my favorite animals in the whole world – BIRDS!

Excerpt:

How hard can it be to make a flexible wing flap for an airplane? Almost all aircraft today use rigid wings with rigid landing flaps. They work, but they waste fuel. German engineers embarked on a mission to reduce kerosene consumption by 6%: “integrating flexible landing devices into aircraft wings is one step towards that target,” a news item from Fraunhofer says. They’ve named the project SARISTU, for Smart Intelligent Aircraft Structures.

Birds are way ahead of them:

While birds are able to position their feathers to suit the airflow, aircraft wing components have so far only been rigid. As the name suggests, landing flaps at the trailing edge of the wing are extended for landing. This flap, too, is rigid, its movement being limited to rotation around an axis. This is set to change in the SARISTU project. “Landing flaps should one day be able to adjust to the air flow and so enhance the aerodynamics of the aircraft,” explains Martin Schüller, researcher at the Fraunhofer Institute for Electronic Nano Systems ENAS in Chemnitz. (Emphasis added.)

What are some of the challenges in building a flexible wing?

  1. Knowing where to flex: The flap can’t be flexible all over, or it would be hard to control. The designers made “five hard and three soft zones, enclosed within a silicon skin cover extending over the top.”
  2. Finding stretchy skin: When the soft zone moves, the skin of the aircraft has to stretch with it. “The mechanism that allows the landing flap to change shape can only function if the skin of the landing flap can be stretched as it moves, a problem tackled by researchers from the Fraunhofer Institute for Manufacturing Technology and Advanced MaterialsIFAM in Bremen.”
  3. Covering the air gap: “Any gap between the flap and the fixed aircraft wingwould cancel out any positive effect,” the article notes. “This led us to develop an elastic connecting element, and this work already covers everything from the chemical makeup to the process technology andmanufacture of the component,” an engineer says.
  4. Designing the material to tolerances: “The mechanism sits underneath the soft zones, the areas that are most distended. While the novel design is noteworthy, it is the material itself that stands out, since the flexible parts are made of elastomeric foam that retain their elasticity even attemperatures ranging from minus 55 to 80 degrees Celsius.”

No feathers, but it’s a start. The team showed off their prototype at the ILA Berlin Air Show in May. Apparently it was not quite ready for takeoff:

When the prototype takes off for the first time it will benefit from a development known as SARISTU, a deformable wing which is currently the subject of intensive research by Fraunhofer Gesellschaft. In future the landing flaps will be designed to adapt in flight to the air flow conditions, thereby always ensuring the best possible aerodynamics.

We celebrate this advance, but you know where we’re going. Birds had it all figured out long ago: the right shape, the right material, the control of airflow, and much more. As Dr. Timothy Standish says in the film Flight: The Genius of Birds, “Feathers do a number of jobs remarkably well.” They are individually controllable, they flex, they insulate, they save on weight, and they can handle the temperature requirements of avian flight. That’s just a partial list achievements in powered flight that surpass anything man has yet designed.

If you want to get hold of that DVD on “Flight” that they mentioned, it’s right here on Amazon.com. I highly recommend it.

I also highly recommend owning birds – because if you work really hard at caring for one for a long time, they might grow to trust you. There is nothing quite like a tiny little bird trusting you enough to let you gently pull open his or her wing for a closer look at how it works:

Cockatiel lets a trusted friend see her wing
Awww! Cockatiel lets a trusted friend see under her wing

There’s more to birds than just well-designed wings. There’s a well-designed heart in there, too! That might even be more amazing than the design of the wing. It is to me.

Note: although this post does not provide a rigorous case for intelligent design, that can be found by looking at the work of Stephen C. Meyer on the origin of life and on the Cambrian explosion. The books that demonstrate the superiority of the intelligent design hypothesis are “Signature in the Cell” and “Darwin’s Doubt“. If you’d like to see a good popular-level presentation of intelligent design related to the origin of life, click here for a lecture.

Mentoring

Advice for Christian parents from a woman who left Christianity at university

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This is from the Beyond Teachable Moments blog – a great blog for Christian parents who want to raise effective, influential children.

Intro:

I recently had the opportunity to meet an intelligent young Christian woman who is proactively learning how to discuss her faith in a secular society.

Why is she so dedicated to doing this?  Because her Christian upbringing had completely failed to prepare her for the challenges of secularism, religious pluralism and atheism at university.

This young woman grew up in close-knit, loving Christian home.  She faithfully attended church.  She was enrolled in a Christian school that taught subjects such as apologetics, hermeneutics, inductive Bible study and managing relationships.  Her parents cared about her spiritual formation.

And yet, this is how she describes her university experience:

“Although I was still living at home during the beginning of my freshman year, university was traumatic at best. I went from a class of 15 in a small Christian school, to 30,000 people at a public university.

The most troubling thing was the amount of differing beliefs and worldviews I encountered, from professors and other students. At the time I thought they had much better arguments than I did for the validity of their views.”

Added to her challenge was the fact that her faith was borrowed, not her own.

“I can honestly and sadly say that as I started my freshman year at age 19, my faith was very much borrowed. It was a set of rules to adhere too. Although I was well aware of the concept of a relationship with Jesus Christ, I did not have it. I was entrenched in the notion of conforming to what people wanted me to do in order to escape condemnation and judgment.”

“My faith at the university was non-existent. If you asked me what I believed I would say Christian, but I did not back that up with any action whatsoever.”

As a mom of two young boys, the top-of-mind question I had for her was: what did she wish she’d known before she went to university?

The rest of the post is her response, but I wanted to quote this part, because it reminds me of what Pastor Matt Rawlings posted about his own loss of faith a while back.

The mysterious Christian woman says this:

Don’t use me to make you look good in front of other people at church, I can see straight through that. It does not feel good and drives me far away. What matters is what is going on inside, not what is projected. Looking perfect and going through the motions does nothing. The very basis for Christianity is what is going on in the heart. Only by letting Jesus work in your heart can actions follow with true authenticity.

And here’s what Pastor Matt said:

Looking back, I had a very fuzzy understanding of the Gospel.  I (and I think many people who call themselves Christians) are what theologians call “semi-Pelagians.”  I believed anyone could come to the altar but if they wanted to continue to be welcomed in the pews, they had to clean up their act and do so almost overnight.  The culture of Christianity at large appeared to me to be that if you came to faith and continued to struggle with lust, a foul mouth or whatnot then there was just something wrong with you.  I felt the church was more about behavior modification than grace.

I needed someone who I knew loved me to sit down with me long before all of these problems arose, look me in the eye and tell me how easy and how difficult it is to be a Christian.  I needed someone cared for me to unpack 2 Corinthians 5:21 and point out that by being “in Christ” I would be judged by Christ’s perfect life instead of my own.  I needed to know that the faith is not about “keeping the rules” but about doing things and not doing certain things to show my love and gratitude to God for what He did for me.  I needed to be able to read the Bible, especially the Old Testament, in a way that always pointed to Jesus Christ.  I needed to understand that God has graciously given us the spiritual disciplines of fasting, prayer, serving the poor, worship, etc. to help me grow.  I needed to hear that all Christians struggle with sin and will, to a certain degree, until they go to be with the Lord or He returns to be with us.

I needed good theology, good spiritual practices, good apologetics and good relationships.  I needed  knowledge and it needed to come from someone who I knew loved me even though I was thoroughly unlovable.  You can’t just leave this to the church staff because they do not have to time to meet with everyone and people with a chip on their shoulder about the church (like I had) feel like they are just doing it as part of their job.  All young people in the church, especially the “troubled kids” need this.  It is a lot of work but anyone’s eternity is worth it, isn’t it?

As J.P. Moreland has pointed out, your beliefs are not something that you form by sheer acts of will. You cannot will to believe things. Your beliefs form naturally through study, and then outward actions come from those beliefs. You cannot focus on the outward actions of your children – you have to focus on the beliefs inside. And know that those beliefs are not formed by habit, singing, church attendance or any other non-cognitive approaches. Beliefs form through a careful study of the evidence on BOTH SIDES. The first thing that Christian parents should be showing their kids is debates with both sides represented. That shows them that there is more to a worldview than just being bullied into it by raising your voice at them.

Christian parents, take note. Don’t be focused on making your child behave nicely on the outside and making it impossible for them to talk about temptations and doubts.  Christianity comes from the inside – from the mind. You need to be helping them form a worldview that has been tested and approved by them, before they ever set foot on a university campus. The Christian faith is not adopted by habit or tradition, it is adopted by transferring knowledge and discussing opposing views openly and honestly.

Don’t be like this mother who is only focused on externals – what family and friends think of her:

The good news is that atheism is not generally adopted because of logic or evidence. That means that a little bit evidence for God’s existence goes a long way against no evidence. A little bit evidence for the reliability of the Bible goes a long way against no evidence. A little bit of the minimal facts case for the resurrection of Jesus goes a long way against no evidence. It’s very important that when your children get to university that they find a conflict between some evidence and no evidence. At that point, it becomes their choice to decide what to do, and it could go either way. You don’t have to make them William Lane Craig before they get to university, for example. But they should have at least read his popular-level essays and books, heard his podcasts, and seen him debate.

Peer pressure on a secular university is powerful – but if you’ve taught your children to value truth over popularity, vanity, selfishness and immorality, then you’ve done your job. Lots of people fall away from Christianity in university because of the hostile environment. Some fall away because they want to be approved of by their peers, some because they just want to be seen as tolerant or smart, some because they want to get good grades from liberal professors, some because they want to have a good time, etc. That’s not your concern. Your concern is to demonstrate your love of truth, and communicate to them  a sober assessment of the evidence pro and con on ultimate issues. After that, it’s up to them.

News

IRS Lois Lerner pushed to have Republican senator Chuck Grassley audited

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From the web site of the House Ways and Means Committee.

Full text:

Washington, DC – Today, Ways and Means Committee Chairman Dave Camp (R-MI) announced the Internal Revenue Service’s (IRS) targeting of conservative individuals includes a sitting United States Senator.  According to emails reviewed by the Committee under its Section 6103 authority, which allows the Committee to review confidential taxpayer information, Lois Lerner sought to have Senator Chuck Grassley (R-IA) referred for IRS examination.

“We have seen a lot of unbelievable things in this investigation, but the fact that Lois Lerner attempted to initiate an apparently baseless IRS examination against a sitting Republican United States Senator is shocking,” said Camp.  “At every turn, Lerner was using the IRS as a tool for political purposes in defiance of taxpayer rights.  We may never know the full extent of the abuse since the IRS conveniently lost two years of Lerner emails, not to mention those of other key figures in this scandal.  The fact that DOJ refuses to investigate the IRS’s abuses or appoint a special counsel demonstrates, yet again, this Administration’s unwillingness to uphold the rule of law.”

Background: 
While the Ways and Means Committee investigation into Lerner’s involvement in the potential Grassley examination is ongoing, documents show that Lerner received an invitation to a speaking event that was intended for Senator Grassley.  Instead of forwarding the invitation to Grassley’s office, Lerner immediately suggested to others in her office that the issue should be referred for examination.  The Committee was able to investigate this information through its authority under Section 6103 of the tax code.  A waiver was signed by Senator Grassley and his wife in order to make this information public.

And there is good news about the corruption at the IRS – the news is reaching the American public.

The Daily Signal reports:

Americans are running out of faith in the Internal Revenue Service.

Seventy-six percent believe that the “lost” Lois Lerner emails were deliberately destroyed, according to a Fox News poll. Only 12 percent believe the destruction resulted as an accident.

This skepticism crossed party lines. A whopping 90 percent of Republicans doubt the IRS’s most recent claims, as do 74 percent of independents and 63 percent of Democrats.

There remains desire for congressional action. Seventy-four percent feel that lawmakers should continue investigating the IRS’s targeting of conservative groups “until someone is held accountable.”

Americans are also dubious about President Barack Obama’s claims that he first learned about the scandal through the media, with just 31 percent believing this to be true.

This poll surveyed 1,018 adults at random and has a margin of error of plus-or-minus three percentage points.

And finally, this, which I posted previously, but it’s SO GOOD:

Now that’s effective cross-examination.