well yes, you see, there is the visible spectrum of "light".. this is your reds, your greens, your blues, for example. but then you have your "invisible spectrum"... this includes autism, the occult, black (lack of photons) the meaning of life, etc. the fact that you do not learn this in school shows how ignore ant you are as a society, and it is for this reason that you are not invited to terraform mars with us.
Canada