@mkbhd I always figured we can't put numbers on it because it's so messy. We have different parts of the eye with different amounts and types of photoreceptors; each eye has a blind spot; we detect motion differently; the dynamic range is affected by pupil dilation. For frame rate, it's about nerve pulses... do they even fire at consistent rates while watching something? Many light sources flicker faster than we can perceive, which presumably means they're faster than our "frame rate"? Or does our brain actually "see" the flickering and smooth it out for us?

I think it's fun to think about for sure though 🙂