ahamoment When the light bulb turns on Quantum leap of creativity Puzzle solver's breakthrough, e.g Lighting event? Light-bulb-over-the-head instance Instant when the light goes on Instant of insight "I just cracked the puzzle theme!" breakthrough Clicking point Epiphany When you get it What you may have while solving this puzzle? Smart greeting is considered pretentious An actor warning cast finally, when he twigs Flash of understanding