There exist gullible, simple-minded religious people.and the more provocative
Religious people are gullible and simple-minded.This isn't the only line of argument I see about whether religion is irrational, or what bearing that would have on the role religion and religiously-motivated decisions should play in public life. But it's such a basic mistake that hearing it from a "rationalist," or hearing it uncorrected in a community of rationalists, is really distressing.
[F]rom an inductive standpoint, most claims that are unfalsifiable should be rejected as untrue.Inductive reasoning has a bootstrap problem. Induction comes naturally to people; it often produces useful generalizations; since inductive reasoning worked for that problem in the past, let's try it on this new problem we have today. The set of unfalsifiable claims you suggest as examples (hiding pink unicorns, Santa Claus, etc.) is a very different collection from the observations leading to the "classical" correct and incorrect inductions like "the sun rises every day," "all swans are white," "bread is nourishing," etc. You're certainly right that it's easy to construct unfalsifiable untruths, but you're mistaken to suggest that has any bearing on the truth of an arbitrary unfalsifiable claim.
If it's "unfalsifiable," then why is it being claimed? Someone must believe it is true in order to claim itFor an example from the sciences, consider the role of symmetries in contemporary physics. If a physical theory has a symmetry, then there are questions in the framework of that theory, perfectly sensible on the surface, that have no answers. A famous example is the question "where am I?", which has no answer without the ancillary question "relative to what?". The notable thing here is that the absence of any answer --- the existence of a symmetry --- is not a dead end but is something with consequences. In classical mechanics, the symmetry of "where am I?" gives rise, via Noether's theorem, to the conservation of momentum. Symmetry against "which way is up?" gives conservation of angular momentum. On the earth's surface, "which way is up?" has an answer, and angular momentum is only approximately conserved: if you spin a top on your desk, it will precess. Whether there's a preferred direction in space as a whole is an interesting question.
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posted by JeffK at 11:06 AM on March 6, 2009