Comment by apothegm
2 hours ago
The LED will display it first, but will the signal reach your visual centers first? And how about the time for your brain to process that signal and make you consciously aware of the visual vs. the way the pain signal is forwarded to conscious processes?
Fair issues, but none of them impact the fundamental point. I'm not trying to make a point on touch vs. visual sensing or with regard to consciousness (time shifting of visual input is a thing, which could be impactful here, see "chronostasis").
The point is to quickly and accessibly convey an intuitive understanding of the propagation speed of information in biological circuits vs. the max speed of information in our universe (to our current knowledge at least) and in our technology.