Both destiny's kisses and its dope-slaps illustrate an individual person's basic… — David Foster Wallace

Both destiny's kisses and its dope-slaps illustrate an individual person's basic personal powerlessness over the really meaningful events in his life: i.e. almost nothing important that ever happens to you happens because you engineer it. Destiny has no beeper; destiny always leans trenchcoated out of an alley with some sort of Psst that you usually can't even hear because you're in such a rush to or from something important you've tried to engineer.