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by bluetomcat
891 days ago
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He talks about the pitfalls of pure rationality. There can be competing explanatory frameworks for the same thing, and they often contradict each other. Rational arguments may seem rigorous like math, but are in practice standing on shifting sands. It ultimately comes down to what you decide to believe in. This is where traditional values and religion come at play. |
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The basic thing is that arguments involve mustering a series of plausible explanation for all the visible pieces of evidence, casting doubt on alternatives, etc. Before Galileo, philosophy had a huge series of very plausible explanations for natural phenomena, many if not all of which turned out to be wrong. But Galilean science didn't discover more by getting more effective arguments but by looking at the world, judging models by their simplicity and ability to make quantitative predictions and so-on.
Mathematics is pretty much the only place where air-tight arguments involving "for all" claims actually work. Science shows that reality corresponds to mathematical models but corresponds only approximately and so given a model-based claim can't be extended with an unlimited number of deductive steps.