[hackinthebochs]

I just finished going through a Fourier Transform course. The technical answer is that you don't interpolate the samples with lines, but with the sinc function. The sinc function is sinusoidal and so it more naturally approximates waves. In this case 2xMaxFreq is enough to reproduce it exactly. Using linear interpolation in the whitepaper is a blatant lie.

>So if our eyes really are 100Hz we can't see anything above 50Hz.

I'm not sure this follows as we're not perceiving waveforms when light hits our eyes, but we're perceiving intensity of energy hitting our receptors.