re: Poker & How do you react\respond when dealer makes a mistake?
Common occurrence in Live Games, especially with talkative or inexperienced dealers who are not paying attention, but it happens to others as well. That is why it is always better to play at the card rooms with the most experienced, professional dealers.
When it does happen, it really sucks, but they make it fair for all involved. (The more shitty the dealers, the more often it happens) They reshuffle all the live cards for the river, so that you have an equal chance to get the same card on the river. If the mistake occurs on the flop, the turn is dealt normally, it is always the river that is changed (but the turn card in this instance will always be what the river card would have been). Many times, if the players are paying attention, they will inform the dealer he missed a person before the card is exposed.
No one can get an advantage by acting too slow or acting too fast, as once the card is exposed there is no choice to keep the card. It is gone 100% and reshuffled into the mix.