Youngprer,
Did you say you were in high school? If so, I'm impressed: the things you bring up are up to par with some college epistemology courses I've taken =)
If you haven't, read Descartes and then read as much as you can on epistemology, which is the theory of knowledge...it sounds like your cup of tea.
The problem with the philosophy that the mind is a flawless tool is that mind is easily tricked. Every sense that the mind uses is susceptible to duplicity. Optical illusions, "fake" surround sound using stereo speakers, phantom limbs, the relative sense of temperature, all these things fool the mind, both conscious and subconscious.
The tricky thing is, even if you assume the mind is infallible, it doesn't mean that the "memory allocation error theory" attributed to deja vu is wrong. It's possible that the mind is infallible, and that deja vu, which we think is an error, is actually the mind's way of something something. It doesn't matter what that something is, the point is that deja vu's (assuming it's the short/long term memory thing) may serve a practical purpose beyond the scope of our understanding.
Hope to hear from you again soon =)
-Ramon http://razor.ramon.com
