- Jun 4, 2013
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Well... yes. One of the fundamental axioms of science is that all "truth" is to be held tentatively. Matt Dillahunty, for one, rejects absolute certainty as unattainable and ultimately rather useless. Not really controversial, that. The problem is people who take the step from "nothing is absolutely certain" to "we cannot know anything". We're constantly forced to draw conclusions based on incomplete information. However, just because we're not completely certain doesn't mean it's a good idea to, say, inject oneself with a virus that all available information implies is lethal on the off chance that every single scientific source is lying.
Nor would I accept a theory that is contrary to what is observed, when every time something predicted is studied in depth the theory turns out to be wrong. It doesn't mean it's a good idea to, say, accept any theory just because it is popular, when every discovery comes as a complete surprise, because the theory never predicted any such thing. In our cosmological and physical sciences people constantly ignore that the data is contrary to the basic observations - and only has a semblance of fit because first one must assume 95% ad-hoc assumptions and ignore the data that falsified almost every little part of it individually. Simply because science is in modern times segregated into specialties. These specialties prevent the rigorous cross-checking of science as in the past when a scientist knew enough about science to know if a theory was sound, not just one piece of it.
There can never be certainty in science. If we were absolutely certain, we would have a theory of everything. As long as there remains unknowns, or problems within the theory - there is always a possibility that the unknown can upset everything now believed. For example, we once believed the Milky-Way was the entire universe - it's those unknowns that have yet to be discovered that prevent anything from being a certainty.
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