Hah, Sue! That's a brilliant theory! You don't kill your grandfather, you just deflect him! And the Flarks and Ploises play a lovely game of pinball deflection, resulting in the best of all possible worlds!
By deflecting your annoying grandfather (or the mistakes of your annoying younger self)...
...you create this!
...the best of all possible worlds, that is!
And you saved us from the clone arrghh, too!!!
Ann