When will people ever learn that they can’t beat the house? Another person tried a robbery at the Cosmopolitan recently, but like so many would-be thieves before him, it didn’t work out the way he had hoped. Earlier this month, a man approached the cash cage at the popular Las Vegas destination. He handed the attendant a note which implied he had a bomb and would detonate it if he was not given $10,000 in casino chips. Specifically, the note read: “Give me 10k purple or Boom”. The attendant complied, but managed to hit the panic button to alert police….