@Kolyo,
In live play they burn one card, then deal out three <the flop>, then another burn card, then the turn card, then finally one more burn card then the river card.
These burn cards in live poker where originally designed to prevent cheating.
They also take away cards that people may need, example if the 3 burn cards were lets say all aces, then the person who is playing the ace, is looking in trouble, even though we do not know those cards that are burnt, and the odds stay the same, the variance must alter, as all ready a person on a draw as 6 percent more chance of hitting his/her draw with the burn cards been included.