Många tänker på det, även jag. Har för mig att det redan finns en tråd om det här på HP... kunde inte hitta den dock.
Men det här svaret jag läste på en sida kändes ganska övertygande..
TROR JAG. Jag är äckligt trött och just nu skulle nog det mesta kunna övertyga mig, speciellt med jobbiga ord på engelska :P
''Hi Rambo,
Congratulations! Very very few people have bothered to even think along these fundamental lines!
You are the second person i know who has asked this question.
It occured to me when i was in universiry .."how do we gaurantee what ia see and call as red is not actually seen as blue and called as red by another guy?
Because, it may be people "see" differently, and call (label) things differently due to inherent diversity of perceptions.
But the more i think about it, the more convinced i get that it is NOT so.
the rersaons are as under:-
1 - The basic genetic template of all humans is "same" even "identical". ("looks" may differ, but that part of genetics hardly matters!)
2 - color perception has more to it than one thinks of. It is all about evolution. Color perception has evolved over large extended periods of time, and fits the "survival of the fittest" rule of evolution. It means what we "see" as 'RED' / 'GREEN' / 'BLUE' is seen as such because THAT perception helped us survive!
Perforce when combined with point 1 above, it means we all HAVE to see RED in "like" fashion, owing to exactness of underlying evolutionary and genetic "sameness".
3 - The biochemical nature of the human retina is SAME in all humans! So the sensory area (which is separate & independent from the "perception" area, even is actually "same" in all humans).
4 - During the learning process when we generate the "lookup tables" that identify sensations in the visual system (sensation in retina + its associated "unique perception") with identifier labels like RED/BLUE etc,
it is almost certain the sensations and associated unique perceptions even WILL be alike due to points enumerated above.
The proof of this lies in the fact that we can play "games"!
people never say "10 meters for you is 5 for me"! Else simple mundane things like playing baseball or basketball or cricket, even walking in traffic, would degenerate into a terrible disaster.
The fact that humans can collectively undertake harmonious activity, itself reveals, the underlying truth of all above observations.
Hope that suffices.
Jayen ''
I'm practically floating in English.
