A few months ago, Nik Walenda walked across a tightrope between two Chicago skyscrapers blindfolded.   I'm not all that impressed.  I think he should try analyzing casino games for a living.  Most days it seems a lot like walking a tightrope blindfolded too.  Only, if I mess up, I don't just hurt myself.  I might cause a casino to lose a lot of money if I allow a game to hit the floor with a Player advantage.  After more than 10 years in the industry, I've never done it, but I have heard cases where it did happen due to a math mistake.