In drifting, you normally only have front brakes. In a turn, you tap those brakes, and push the gas in order to get the rear wheels pushing you around the turn. If at the end of that turn, you have some moron walking in the middle of the track, while at full speed, your only options are gun it and hope you can increase the turn. Or Brake, and flip killing yourself and the moron walking in the middle of the track.