We all make certain very basic assumptions. In philosophy, theyâre called ârational assumptions,â but Iâve started to prefer the language ânecessary assumptions.â These are things like, âThere is a world outside of me that my senses revealâ and âOther minds exist in this world.â
I fully admit that you cannot âproveâ these assumptions, though indeed experience confirms their utility. It certainly seems, for example, that thereâs a world outside of me that operates independently of my thoughts, and it certainly seems that other people have the capability to think in ways that are different from mine. Even if we were wrong about these assumptions, there appears to be no way to ever find out that weâre wrong, and since itâs so dang useful to make these assumptions, we do.
In order to function, I am forced to make the necessary assumption that thereâs a world outside of me and that there are other people.
Within the context of the âexternal worldâ granted by these assumptions, we can observe that claims made about the external world supported by evidence from the external world are far more likely to be true than claims made about the external world supported by no evidence or by evidence drawn only from my internal world of feelings and emotions. And itâs not just my personal observations that evidence-based inquiry works when evaluating claims about the external world: we have the entire history of human civilization using evidence-based inquiry to determine the likelihood that claims are true.
The computer that youâre reading this message on is a good example of one of the results of evidence-based inquiry. The people who designed it didnât determine how to do it by consulting their precious feelings or their intuition: they actually examined the real world and supported their claims with evidence from the world outside of their heads.
Itâs asinine to think that just because all humans are forced to make a handful of necessary assumptions in order to function, this means that no claim ever needs to have evidence to support it. Thereâs an old, old game in the land of theology called âMake everything into faith.â Itâs a fun game: just claim that everything, everywhere, is a matter of faith. Those scientists? Faith in their scientific method. Judges and juries? Faith in the testimony they hearâŚand faith in the idea that evidence can be useful. Historians? Total faith. That raving lunatic on the streetcorner? Faith.
See that? Everyoneâs got faith, according to this disingenuous argument. Everybody, they claim, is equally clueless about everything and equally wandering around in a fog mumbling vague things about the Matrix movies and wondering if, âReality is, like, totally a dream, dude.â
Itâs a good thing for the human race that there are enough people who arenât as absolutely in love with ignorance as these folks are.
Believe it or not, folks, there are people in this world who have knowledge, and to try to pretend that they are on equal footing with your fantasy life â on the basis of the fact that all people have to make necessary assumptions! â is to go far off the deep end.
Remember, our assumptions grant the existence of an external world. Weâre having a discussion in the context of having already made these assumptions. And in that context, âfaithâ means accepting claims about the external world without sufficient evidence. People who â again, in the context of the external world granted by our assumptions â hold beliefs based on sufficient evidence have a superior position: they have beliefs that â again, within the context of the external world granted by our assumptions â are much more likely to be true.
If you want to question the assumptions, go ahead â conclude that Iâm a figment of your imagination and a glitch in the Matrix and then go do something else. Hey, maybe if you hid under your covers and counted to ten really loudly, that would make all the meany-bo-beanies vanish, eh?
Now, whatâs that, you say? God is a necessary assumption to you? You have a special means of detecting ârealityâ thatâs not available to everyone else and canât be confirmed by any means of inquiry into the world outside your head? Thatâs great, guys. Have fun with your fantasy life, but before you do, pause and consider that what weâve been discussing on this thread are claims. People make claims to others because they want to convince other people of something.
If you donât think that other people should believe in your god â if you really think that you do not have sufficient evidence for your claim, and it all boils down to your precious little feelings and daydreams â then thereâs really no point for you to be discussing it in public. By definition, youâll never be able to rationally convince someone else.
If, on the other hand, you do think that there is sufficient evidence for your god, then we can discuss it. But in order to do this, you have to accept that we use evidence to determine the likelihood of claims about the (assumed) external world.
Your third option, of course, is to forget about all of this and say, âAw, heck! This evidence stuff is hard! Iâm just gonna go watch my Matrix DVD again! And then Iâll watch Donnie Darko, and every other execrable escapist fantasy every made, which only ever appeals to angsty teenagers and others who have to make up their own reality because they canât deal with actual reality.â