by Noc » Tue Jan 17, 2012 7:34 am UTC
I dunno if I agree with you, HIppo. Science isn't so much about "trust in the senses" as it is about consistency, and making reliable and accurate predictions. Even if what our senses show us is an illusion, observation still allows us to figure out how the illusion works (if it does so on a consistent basis).
The difference between science and faith is that extra step of observation and experimentation. It's founded upon the idea that just because something seems like it makes sense doesn't make it necessarily true. The thing with theology (and most nonscientific approaches to this sort of thing) is that they stop at the first step. "Hey! It just occurred to me, it would totally make sense if things worked this way!" Such methods can produce a model that is entirely reasonable and internally consistent -- and may even be rather elegant and intuitive. But there's no reason to believe that such a model has anything to do with reality, except maybe by coincidence.
Like, if you had a fever dream that revealed to you the heliocentric nature of the solar system? Okay, awesome. You may have even gotten lucky and hallucinated up an accurate model! But there's no reason to believe that that model is accurate until and unless you can use it to reliably make some specific predictions about the movements of the cosmos. More specifically, your predictions have to be more specific and more reliable than the other models before we'll have any reason to choose yours over theirs.
It's entirely natural to wish to believe something solely because it makes sense to you. It's comfortable! It avoids digging into the world of weird, complicated, counterintuitive systems, or statistics, or degrees of certainty and uncertainty. It's still stupid: there's nothing valid about it.
(Or, rather: there's nothing valid about constructing a worldview this way, because the world is very big and very complicated. We can often get through our daily lives alright without forcing our decisions to meet standards of rigor and evidence. We can leave all that to other people, and just trust what they tell us. Actually, this delegation of fact-finding is entirely necessary, but that doesn't mean that you shouldn't subject your sources of knowledge to some critical analysis. It's their job to give you good information, so you need to make sure they aren't bullshitting you, intentionally or otherwise.)
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Another thing the scientific method depends on (as mentioned above) is the idea that given the same starting conditions, the same action will have the same effect. The important thing here is that this is not equivalent to "it worked once, so it'll work every time!" Rather, what this means is that if you take the same action and start getting different results, you know that the starting conditions must have changed -- which means you can get to work figuring out what the difference is between both circumstances, until you can reliably predict which conditions will produce which result.
The other thing is that this is not a falsifiable assumption. There is no way to tell the difference between a rational universe (where apparent randomness is due to a change in background conditions you aren't measuring) and an irrational universe (where apparent randomness is because things change for literally no reason). And given the vast, vast number of things that we have historically believed were just the whims of gods or spirits, unknowable and fickle and maybe related to these rituals we keep doing I guess -- given the number of these things that turned out to be the result of measurable and predictable phenomena that remain so to this day? The rational universe seems to have a pretty good track record so far.
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A FURTHER thing to mention is about Occam's Razor. A way to look at it so it makes more sense is, "how many unproven assumptions do we have to make in order for this to be true?"
For instance, suppose I see a SPOOKY APPARITION. It's a ghost! Except, for it to be a ghost, ghosts would have to exist. The human mind would have to have some presence beyond its meaty nature, which is capable of remaining on the world after its death (or making an impression on a place), and this spirit/impression would have to be both capable of mobility and action, and also capable of interacting with the physical world in such a way as to make it visible to me. There's no particular reason to believe that any of these prerequisites are true, in and of themselves. On the other hand, there's plenty of very well documented cases of the human mind hallucinating things that aren't there due to some internal condition, so by Occam's Razor it makes more sense to figure, tentatively, that I had some kind of hallucination than to believe that I saw a ghost. We don't know that it was a hallucination for sure, but Occam's Razor provides a "best guess" in lieu of contradictory evidence.
If we could find some ways of interacting with this apparition, to gather evidence that suggests that it exists independent of whatever brain-fart I had? Then awesome: with more evidence, we can start to modify our tentative conclusion. An important part of the scientific method is accepting this tentativeness: of being willing to say "Yeah, I'm not really sure what it was. This is our best guess, but it's not very good." And then hopefully saying, "Fortunately this conclusion is falsifiable, so let me put together an experiment to see if I can't nail it down one way or the other."
Religion and superstition don't do that. They say "Oh, yeah! I know exactly what it was. It was definitely this thing I have heard of previously that sounds similar. It makes perfect sense! Furthermore, given this, I can tell you exactly what it means and what you should do about it." Which is immensely more satisfying to hear, as opposed to science's shrug and resolution to keep working on it. It's a quick, satisfying, easy answer that is -- as often as not -- wrong. Occam's Razor is useful, but it's not a substitute for a reliable, empirically proven model.
Have you given up?