I think that we have no reason to think they're reliable under a deterministic framework and we have reason to think they're unreliable under that same framework. Namely: Every other physical process is not rational, how come our brains just happen to be?
What reason do we have to think they are unreliable under a deterministic framework? There is nothing irrational about any physical processes e.g. clouds forming shapes. What shapes a cloud forms is entirely deterministic. It occurs due to the laws of physics acting on matter and energy. So, your claim “Every other physical process is not rational” is false.
Perception requires some sort of energy. Sight, hearing, etc, all require different organs which consume energy. Which means evolution has to find what are the most beneficial things to perceive in compairson with how much they take to perceive. It's not like creating an omniscient being is just as "cheap" materially and in terms of food intake as creating something that sees much less. Spiders are almost blind and they survive just fine.
Evolution is not sentient. It doesn’t plan and it doesn’t calculate the best option in terms of costs and benefits. It works through mutation – which occurs due to mistakes. We are all mistakes of nature. Nature doesn’t care if we live or die. This is why 99.9% of all the species to evolve so far on Earth are already extinct and the remaining 0.1% are also at risk of going extinct.
Sight is not the only way to create a model of one’s environment. Spiders have eight eyes which can detect light and darkness. Spiders are highly sensitive to motion. Which helps them survive and reproduce. Have you ever seen a human without any capacity to see, hear, touch, taste, and smell? Would such a human be able to survive without help from other humans? I have seen people in a coma. They were kept alive by machines and doctors and nurses. Without their help, the patients would die.
It is well known our brain doesn't perceive everything. We don't perceive UV, we don't perceive microwaves, we don't have that ability that birds have to detect the magnetic field produced by earth's core to know which direction is north (despite it being a very useful ability, considering how impactful compasses are).
Since we cannot perceive what our brain doesn't perceive (by definition), we cannot know how much we do perceive or how much it is altered by our brains (we know our brain alters perceptions, or else how would optical illusions arise?) So I don't believe the argument from evolution works when you take into account that there is a cost for exact perception which might not be worth the payment. What do you think?
I agree that our brain doesn’t perceive everything. It doesn’t have to perceive everything for humans to survive and reproduce. It has to perceive just enough about hazards such as falling off cliffs or getting eaten by lions to ensure our survival and reproduction.
See, what's what I think, but you tell me there is no "choosing" at all.
That’s not what I said. I said that our choices are determined and constrained by our genes, environments from conception to the present, nutrients from conception to the present, and experiences from the womb to the present.
To prove me wrong, you would have to do only the following:
1. Live forever without consuming any oxygen, fluids, or food.
2. Do things other organisms e.g. tardigrades, dolphins, chameleons, etc. can do.
3. Teleport everywhere and everywhen.
4. Prevent all suffering, inequality, injustice, and deaths.
5. Make all living things (including the dead ones and the never-born ones) forever happy.
6. Be all-loving, all-knowing, and all-powerful and make all the other beings also all-loving, all-knowing, and all-powerful.
7. Own an infinite number of universes and give all beings an infinite number of universes each for free.
Once you have done the above tasks, I will be convinced that your choices have no constraints but even then, your choices will still be determined by the variables (e.g. your experience of reading these words) that produced the choices.
If you contend that we can control what we think about, then we can't be running deterministically right? How can we be in control if everything we think is predetermined?
It is because we are running deterministically that we make the choices we make.
I didn't say that our choices are predetermined. They are determined in the present by the interactions of four types of variables which are genes, environments, nutrients, and experiences.
Our choices are both determined and constrained by our genes, environments from conception to the present, nutrients from conception to the present, and experiences from the womb to the present. This is why banana trees don’t post on this forum and humans don’t do photosynthesis.
We don’t have complete control over everything we do. The amount of control we have is determined and constrained by our genes, environments from conception to the present, nutrients from conception to the present, and experiences from the womb to the present.
I do some things even though I don't want to do them. Here are some things I have done, currently do or will do even though I don't want to do them:
1. Breathe
2. Eat
3. Drink
4. Sleep
5. Dream
7. Pee
8. Poo
9. Fart
10. Burp
11. Sneeze
12. Cough
13. Age
14. Get ill
15. Get injured
16. Sweat
17. Cry
18. Suffer
19. Snore
20. Think
21. Feel
22. Choose
23. Be conceived
24. Be born
25. Remember some events that I don't want to remember
26. Forget information that I want to remember
27. Die
If I had as much control as I would like, I would never do the 27 things I listed.
I understand that there are compatibalist views which support both free will and determinism, but you stated multiple times that you don't believe in those, and that we'd need freedom to have any choice, and so any responsibility. For the last couple of paragraphs though you suddenly mentioned "choice" a dozen times. I'm confused...
We would need to be all-knowing and all-powerful to be able to do everything we want to do and to refrain from doing everything we don’t want to do and to have complete control over everything that exists. I am sorry that you are confused. Has reading everything I have said above helped you to understand what I am talking about? I have never said that we don’t make choices. I have said many times that we make choices and these choices are not free from determinants and constraints. These choices are determined and constrained by our genes, environments from conception to the present, nutrients from conception to the present, and experiences from the womb to the present.
Yes, your thought experiment about connecting the trigger of a gun to the spin of subatomic particles is interesting. However, that is not how the macroscopic world works. Quantum decoherence is the reason the macroscopic world does not exhibit the superposition, indeterminacy, and entanglement that exist in the quantum world. Quantum decoherence is the reason the macroscopic world is deterministic despite quantum indeterminacy.
I hope that I have explained everything clearly. If you have any questions, please ask. If you can prove me wrong, please do. Thank you.