Another favorite is the rope ladder.
I love to hear people complain about that. The joint operator will climb the ladder with the greatest of ease, push the buzzer and hop down.
People standing around will mutter, and I quote, "there's a trick to that."
Well no kidding!!![:0]
If there wasn't a trick, every mark out there would win and the joint would fail. Stop complaining, learn to play, and you might win. It's like Benjibear said... Casinos, lottery, etc. all have odds and chances involved.
I like to think most games are not flat, just a good challenge.