It needn't be perfect at first, just better than nothing (fool some of the eyes, some of the time e.g. in low-light conditions) and a gradient. See Richard Dawk

It needn't be perfect at first, just better than nothing (fool some of the eyes, some of the time e.g. in low-light conditions) and a gradient. See Richard Dawkins' chapter "Do good by Stealth" in River Out of Eden https://wikipedia.org/wiki/River_Out_of_Eden#Do_good_by_stealth https://wikipedia.org/wiki/River_Out_of_Eden#Do_good_by_stea...