There’s a joke about a man unable to get to sleep while staying at a hotel in Las Vegas. He goes down to the roulette table, puts $5 on black and wins. He keeps betting and rides an amazing streak, finally holding well over $1m in chips. Deciding to trust Lady Luck one last time, he loses everything. Returning to his wife in the hotel room, she asks how he did.

“Not too bad. I lost five bucks.”