They won't use Flash because Steve Jobs/Apple and Adobe didn't/don't get along. It has nothing to do with whether the iPhone/iPad could have been designed to use Flash and is everything to do with the fact that Jobs would not let that happen. But now the iPhone/iPads have gone along that separate route it's unlikely they'll rewrite the whole operating system to suit a few crossword players.
The Hubble Telescope has just picked up a sound from a fraction of a second before the Big Bang. The sound was "Uh oh".