Dumb Scientist

One part of a recent survey caught my attention:

The strongest correlate of opinion on climate change is partisan affiliation. Two-thirds of Republicans (67%) say either that the Earth is getting warmer mostly because of natural changes in the atmosphere (43%) or that there is no solid evidence the Earth is getting warmer (24%). By contrast, most Democrats (64%) say the Earth is getting warmer mostly because of human activity. … The divide is even larger when party and ideology are both taken into consideration. Just 21% of conservative Republicans say the Earth is warming due to human activity, compared with nearly three-quarters (74%) of liberal Democrats. — Pew Research Center

In other words, most of the general public appears to believe that the existence of abrupt climate change A large-scale change in the climate system that takes place over a few decades or less, persists (or is anticipated to persist) for at least a few decades, and causes substantial disruptions in human and natural systems. (formerly known as anthropogenic ‘Human-caused’ global warming) is a question of politics rather than science. (more…)

Many issues in American politics confuse me, but the widespread opposition to gay marriage truly boggles my mind. In a bizarre turn of events, California banned same-sex marriage, then Iowa struck down a similar ban. Until just recently, the U.S. was one of the few western nations that refused to decriminalize homosexuality. Miss California became a GOP star last week because of her opinion on this issue. My personal reaction, on the other hand, was similar to Jon Stewart’s: (more…)

Marble and I have previously discussed creationism and evolution, but our conversation later centered on a non-standard cosmology known as plasma cosmology (popularized as the “Electric Universe”). (more…)

I used to go scuba diving, but I routinely got seasick on the boat. Since I had nothing better to do while leaning over the water, I wondered why I had to go through this wretched experience. I understood the origins of physical pain– an animal that didn’t realize it had sprained an ankle would likely hurt itself even more rather than waiting for it to heal. But why should I feel nauseous when on a boat? I wasn’t being hurt by the waves, so this incapacitating condition wouldn’t have provided any advantage to my ancestors and therefore shouldn’t have been favored by natural selection. (more…)

I have a tendency to get attached to my beliefs, because in a very real sense they’re the only possessions which can’t be taken from me. I’ve poured countless hours of effort into them, whether I derived the belief independently or found them in another person’s writings. I find it easier to be an intellectual parasite in this sense, because independently deriving beliefs is much harder. But some beliefs can’t be easily falsified, so critically examining them is often just as difficult as independently discovering them. Either way, the prospect of abandoning any of my beliefs is painful because it involves admitting I was wrong. I always find that difficult; the shame of admitting my mistake and the difficulty of re-aligning my worldview pose serious challenges. (more…)

This is what you get if you take a photo of the Moon every night for a month, then make a movie out of those pictures. The Moon’s phases aren’t surprising, but the Moon also appears to grow and shrink as it orbits the Earth. This happens because the Moon’s orbit is slightly elliptical; its distance to the Earth varies by about 10%.

Also, the Moon appears to “wobble” from left to right. That’s because the Earth’s gravity pulls harder on the Moon the closer it is to the Earth, so the Moon travels faster in its orbit when it’s closer to the Earth. The Moon’s rotation rate matches its average orbital speed (which is why we only see one face of the Moon), but its orbital speed varies during the orbit while its rotation rate remains fixed, so the Moon appears to wobble from left to right.

2009-08-10 Update: I’ve noticed that many people arrive at this article by googling moon wobbles. All the other sites on the first page claim that “moon wobbles” are responsible for explosions, mass-murder, earthquakes, terrorism, etc. Sadly, I need to emphasize that the wobbling I’m describing can’t possibly result in these kinds of ludicrous effects.

When I was a college freshman, a fiery preacher named Tom Short would stand in a courtyard, evangelizing and arguing with any pedestrian who challenged him. More often than I’d care to admit, I found myself in that courtyard listening to him. It was like watching a car accident– horrible but so fascinating that I couldn’t look away. He spent a lot of time talking about Hell. He casually dismissed accusations that his homophobic rhetoric was indirectly responsible for a recent tragedy– the brutal murder of Matthew Shepard– by suggesting that Matthew was actually killed by other homosexuals. Other frequent topics included the pack of atheistic lies called “evolution,” and the argument that the Earth was only a few thousand years old.

Then one day, I heard him say: “Brontosaurus never existed.” Someone immediately responded: “That’s ridiculous! Of course (more…)

I don’t believe in anything with absolute certainty; I always allow room for doubt. How much doubt, though, depends on the type of statement:

Level 1 – Least doubtful

In my opinion, Descartes uttered the least doubtful statement ever: “I think, therefore I am.” I’d have no sense of self without making this assumption, so I definitely couldn’t inquire about anything else. (more…)