Fiber Optics

all this tech just for faster porn

>because there are a lot more hues to red than there are 1's and 0's in 40 transistors.
Are you retarded?

2^40 >> "hues of red" whatever that's supposed to mean

Even if we had sensitivity to a difference of 10^-6 nanometre in wavelength and used the entire visual spectrum 2^40 >> 400*10^6.

Surely you realise that there are engineering and possibly quantum mechanical limits to the continuous spectrum of light.