Hello. Thank you for reading this. I'm in grave need of philosophical counsel please. I cannot 'get' the distinction between 'a priori' and 'a posteriori'. It seems to me that anything that is known must be, in some way, related to experience.
I'm troubled by this thought experiment: If a baby was born with a terrible genetic condition which excluded all the human senses, what would the child 'know'? Without the 'experience' of the senses, what could the child ever know? Not even syllogism would be possible; without experience, language would not be available to the unfortunate child. And I imagine that this would be true of numbers too.