PDS: Opinion: One of the best videos on the Fourier Transform I've ever seen, with a focus on optical pattern recognition... Worth re-watching again and again,

PDS: Opinion: One of the best videos on the Fourier Transform I've ever seen, with a focus on optical pattern recognition... Worth re-watching again and again, in my opinion... Key takeaway: Digital computers can compare (subtract) two Integers (as bit patterns) in a speed evolution (over the past 50 years or so) from milliseconds to microseconds to nanoseconds -- but even those comparisons are limited by the speed of electricity and the necessity of multiple step transformations of logic gates... Lenses, on the other hand, can perform complex pattern comparisons (via Fourier Transforms) -- at the speed of light -- ORDERS OF MAGNITUDE FASTER -- for more complex (non-binary, "multiple-waves-at-a-time") comparisons! Opinion: Optical computing is the future...