People are probably more different than they think. They smell, taste and feel things differently. It makes me wonder: Do humans truly receive the exact same inputs across the species? I'm considering what are regarded as normal humans, who don't have some sensory disabilities that preclude detection of certain inputs.
The taste of spiciness made me consider human perceptions. According to common understanding, spiciness is basically the same thing, and some people are more resistant to it than others. However, I also know that people can be resistant to one type of chilli yet be strongly affected by something made from a different chilli. This makes me suspect that people really do sense the same thing very differently.
A part of this may be a matter of the receptors themselves. Simply put, someone may see the same red quite differently from someone else. The other part is probably a matter of a person's memories, whereby associations are made to the input and result in quite some post processing that may color the interpretation of an input any number of ways.
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