Explanation for 9:33 : Since the "function gun" shoots out values of 1, the reason they turn 0 is because e^(ipi), aka the targets themselves are -1, therefore getting "nullified" from the shot.
I never have thanked me for studying English before I got this clip!! I really wanted to know about this Alan's masterpiece. No Japanese explanation, no math skill to understand... but I got this! Thank you. Thank you a lot from Japan😭🙏