[QUOTE="domatron23"][QUOTE="danwallacefan"][QUOTE="domatron23"] So this is something along the lines of "a mind formed by naturalistic evolution cannot reason because the capacity to reason was formed as an adaptation".
I don't really get it, why does the ability to reason being "simply the evolution of the mind" undermine it in any way? This all seems strkingly similar to Alvin Plantinga's evolutionary argument against naturalism. If that's the case then all one has to do is point out that reasoning and thinking about things which accurately represent te actual world would have greater survival value than reasoning and thinking about things which are random and have nothing to do with reality.
I think to make a better argument you would have to say exactly why the thoughts and knowledge of an evolved mind would be unreliable.
danwallacefan
You can't simply assert that Domatron. You have to show that the true beliefs are more beneficial than the false beliefs which produce the exact same behaviors in the end. we know that false beliefs can produce the exact same behavior (the tiger's a big **** cat, but in order to pet the thing, the hominid has to run away). Come to think of it, such a belief might be beneficial by reducing the possibility of post-traumatic stress syndrome. but regardless, genetic drift is what gives Plantinga's argument against naturalism its certainty. Meh I'm just going to copy/paste the response that I gave in your old thread about this argument:
As far as I could tell the guy was basically saying that a belief in naturalistic evolution is self defeating because it fails to account for a reliable cognitive faculty that will be able to discern truth. Behaviour, he says, not semantic content matters in respect to natural selection therefore the beliefs of a mind formed by naturalistic evolution are intrinsically questionable.
It's a neat argument but it fails for the plainly simple reason that true beliefs are more adaptive than false beliefs when it comes to representing the external world and satisfying desires. The guy makes the point that different beliefs (true and false) can result in the same adaptive behaviour and he uses the example of Paul the hominid to illustrate this. In the first scenario Paul does not like being eaten by tigers and so when he sees a tiger he has a true belief that it may eat him and then flees. In the second scenario Paul loves being eaten by tigers and when he sees a tiger has the false belief that it wont eat him and then flees. In this case both a true and a false belief produced the same adaptive behaviour. The problem is though that only Paul in the first scenario fulfilled his desire of not being eaten, the Paul in the second scenario utterly failed in his desire of becoming tiger food.
In the same way that evolution is blind to thoughts and semantic properties so too are we blind to evolution. Paul is not thinking about what is and isn't adaptive he is only thinking about his desire in regards to the tiger. An organism striving to satisfy his desire can survive natural selection only if those desires coincide with what is adaptive. That's why you don't get people who love to be eaten by tigers.
If our desires reflect what is adaptive then only true beliefs will suffice in the mutual pursuit of adaptivity and mental satisfaction.
Domatron, you never actually addressed the argument. All you did was bring up an example of a false belief giving rise to a maladaptive behavior. What you did not address is the point about a false belief leading to an adaptive behavior. So long as that happens, false beliefs will spread through the gene pool, and our cognitive faculties will be useless. Hence, we should not trust our own beliefs if we are naturalists who accept evolution. What?
Did you even read what I wrote? I never mentioned anything about a false belief leading to maladaptive behaviour.
My point was that behaviour is the result of ones desires paired with ones beliefs. You desire not to be hurt so you run away from things that you believe to be dangerous. You desire to copulate so you copulate with whatever looks like a fertile female of your species etc etc.
In any scenario where false beliefs lead to adaptive behaviours (which is what the argument is saying would be possible with naturalistic evolution) an organisms desires must be disappointed. Paul had the false belief that the tiger was not dangerous but the reason why he ran away was because he wanted to be eaten. His behaviour was adaptive yes but as far as Paul is concerned he failed in his goal.
Organisms don't act based on what they think will propegate their species the most, they act based on their desires. Do you have sex because you want to behave adaptively? No you do it because it feels damned good. Do you run away from predators because you want to live long enough to pass on your genes? No you do it because you don't want to get mauled.
So lets say you have organism A whose desires coincide with what is adaptive and organism B whose desires coincide with what is not adaptive. Lets say that they either generate false beliefs F or true beliefs T.
AF (an organism with adaptive desires who has false beliefs) would quickly die out I think you and I can both agree on that point
AT (an organism with adaptive desires who has true beliefs) would behave exceedingly well and would have a very good chance of being selected for
BF (an organism with non-adaptive desires who has false beliefs) would behave adaptively some of the time and would have an average chance of beng selected for
BT (an organism with non-adaptive desires who has true beliefs) would die out very quickly indeed
So I suppose the argument comes down to considering whether AT or BF would be fitter. I'll articulte a scenario where I believe that BF would falter where AT would prevail.
Copulation: BF must pick a suitable partner of the correct species, gender and age to copulate with if he is to act adaptively. BF wants to copulate with a young, male of a different species. Lets say that there are 1000 items in BF's environment (trees, rocks, predators, males) only ten of which would be ideal to mate with. He obviously has to select very carefully otherwise he will get a false negative which might impact his fitness. Well there would be a 1% chance of him getting a false positive but 99% of the time he will be copulating something that would not get pregnant.
Compare this to AT who desires to copulate with an appropriate mate and who can accurately discern what objects in his environment are females of his species at a fertile age. Obviously he would be far more successful that BT.
Do you honestly believe that BF could behave consistently and as adaptively as AT?
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