moose;222595 wroteThe deliberately miscalling rule is so that you don't say on the river "I have a flush" to get the other guy to muck and then show a bluff. He didn't do anything other than show a card.
This is it exactly.... As Moose says, that's angling, however two years ago most Casinos allowed you to show a card while playing cash (not tournaments) as long it was down to heads up. Recently "some" casinos have started to make it a rule that you can never show a card... I have no real preference either way on that one...