गूफ़

Derren references the unbroken genetic chain from the people sitting in the audience all the way back to the first single-celled organism "seven billion years ago."

Single-celled organisms didn't evolve until 3.5 billion years ago, and, in fact, the Earth itself didn't form until 4.5 billion years ago.

Before Brown "fills" participants with the holy spirit he specifically asks if they know him, which simply implies they are not stooges. Yet almost every time he knocks them back, they are prepared and stiff as boards. They even throw out their hands behind them to catch their fall, before pretending to be in a trance. "Real" faith healers have several staff ready to catch their victims, when they loosely collapse.