I do and re-do things that I used to do in a flash, because I want to be more perfectionist about these things. Maybe it sounds pompous and pretentious, but that's the way I feel.
When I was young, I ran to see Astaire and Rogers, Huston, Lubitsch - they were formative for me. I also read 'Flash Gordon' when I was 6, but if I were still reading it when I was 16, I'd have been an imbecile.
While markets are supposed to ensure transparency by showing orders to everyone simultaneously, flash orders are currently allowed because of a loophole in securities regulations that allows for immediate trades.