Comment Re:Well, you were dumb enough (Score 1) 92
It's not terribly uncommon to find a lottery where all or a portion of the jackpot is carried over to the next jackpot if nobody picks the winning numbers. In some cases this can increase the payout sufficiently that the YZ > X. The part about people being bad at math is that very small numbers round off to 0.
A one-in-a-million chance to win a billion dollars is a great deal if the tickets cost less than $1000--but you're still just throwing money away if you buy a ticket.