A required course is worse than an elective.

I wrote the initial draft of this post using my Ipod's Wordpress application, tip-tapping away as I sat in the very class that inspired it. A required class is worse than an elective class. A simple and inevitable process ensures this. Making any college course a requirement for graduation ensures that more students will enroll in the course. This enrollment will necessarily include disinterested students- kids who would never take the class if they didn't have to. These students will only meet the minimum standards to achieve graduation. A mass of disinterested students sucks the life out of a classroom. Responses must be pulled like so many teeth, and more people sleep and scribble on their desks than take notes. Out of boredom, a few play games on their laptops or write blog entries on their iPods. No one makes the effort to go over the required readings. No one shows up to class if they have a choice. Usually, attendance is made into a requirement itself.

Continue ReadingA required course is worse than an elective.

A tumultuous story told by a stone with streaks of pure iron

Back in December, I had the chance to walk through New York's Museum of Natural History with Ebonmuse (of Daylight Atheism). He pointed out an exquisite stone from the Proterozoic Eon. You could plainly see broad streaks of pure iron running from side to side. Such streaks could never form today, due to our oxygen-rich environment. That observation was the beginning of a mind-expanding yet poetic story. I learned a bit of that story back in December. Now, Ebonmuse tells a much more expansive and dramatic version. Here's an excerpt, but I'd highly recommend a visit to Daylight Atheism for the full dose:

Looking at this stone, you get some idea of the dizzying vistas of geological time, as well as the turmoil that life has endured to reach the present day. Each of those colorful red and silver layers represents what was, in its own era, a disaster beyond imagining, one that reset life to its starting point. Each of those layers, as well, is a silent testament to life's tenacity in the face of overwhelming odds. Of course, the cycles of growth and destruction did not last forever. Eventually, evolution found a way, as evolution nearly always does, and oxygen was tamed to become a power source in an entirely new metabolic cycle. The oxygen-breathers arose, the remaining anaerobes retreated to the deep crevices of rocks and the sea, and life found a new equilibrium, with the balance of the atmosphere permanently changed. All the oxygen we breathe today is biologically produced, a tangible proof of life's power to reshape its own world.

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Another well-deserved attack on rationality

Why do we do the things we do? Why did you propose that woman, for instance? Or why did you accept a job offer from that man? The January 29, 2009 edition of Nature (available online only to subscribers) takes a look at this question in an article by Mark Buchanan titled "Secret Signals: Are People's Interactions Driven by a Primitive, Not Linguistic Type of Communication?" Scientists have determined that there is a second channel of human communication that (often) acts in parallel with our rational thinking and verbal communication. It's difficult to pin down power and scope of this non-linguistic ability, however. Recently, computer scientist Alex Pentland has started using wearable electronic devices in order to study our ability to communicate using non-linguistic behavior. It is Pentland's aim to try to assist organizations to make better use of their personnel based upon this ubiquitous and powerful hidden communication. Many people resist the idea that many of our choices are not determined by "conscious intentions and deliberate choices." It's time to stop resisting, however. For example, our behavior is highly determined by our social context rather than our innate "character." On this topic I've often recommended an excellent book titled The Person and the Situation, by Lee Ross and Richard Nisbett. See also, this earlier DI post titled "Laughing at not funny things, and the limits of introspection."

Continue ReadingAnother well-deserved attack on rationality

Non-news Travels Fast

I was reading about a couple of meteors (bolides) spotted in the last couple of days. One point made by BadAstronomy is that misinformation spread much faster than fact. We discuss this sort of issue regularly, using terms like "counterknowledge" and "agnotology". In this case, last week's news about two satellites colliding gently about halfway out to geostationary orbit got muddled in with these meteor reports. Note: Gently in astronomical terms means a collision as if only one ton of TNT had been detonated in them. There may be pieces large enough to see if they eventually drift low enough to burn up at night. But not like the fireballs seen in the last couple of days. The entire satellites were not fast or large enough to glow like the recent events. But Twitter was apparently abuzz with discussion of the (non-happened) satellite re-entry. BA clearly explains why this is silly. But the rumor is still propagating. Unfortunately, several news outlets initially reported it as fact. It's like the virus warnings (hoaxes) that well-meaning acquaintances send me about once a month. Most of their dire "this is real!" warnings were documented at Snopes between 3 and 10 years ago! I usually politely respond with the link to the particular case at Snopes, and suggest they add Snopes to their Bookmarks/Favorites.

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Creationists blather their way through Darwin Day

If you visit Ken Ham's creationist site, you'll see an article titled, "Did humans really evolve from ape-like creatures?" Here's a key concern raised in this article:

Perhaps the most bitter pill to swallow for any Christian who attempts to “make peace” with Darwin is the presumed ape ancestry of man.

It's difficult to believe the ignorance displayed by this sentence. Why can't creationists understand that not only did humans evolve from other ape-like creatures (the scientific evidence is abundant and irrefutable), but that humans are apes. Check the features listed here:

The similarities can be seen throughout our bodies. For instance, humans and the African apes all lack external tails and have hands with a thumb that is sufficiently separate from the other fingers to allow them to be opposable for precision grips. Humans are also sexually dimorphic--males are 5-10% larger on average and have greater upper body muscular development. Like chimpanzees and bonobos, we are omnivorous. We kill other animals for food in addition to eating a wide variety of plants. Internally, our bodies are even more similar to the great apes. We have essentially the same arrangement of internal organs and bones. We share several important blood types. We also get many of the same diseases.

Continue ReadingCreationists blather their way through Darwin Day