As I understand it, the Lottery show is actually recorded at 8ish, and broadcast later.
No it isn't. Urban myth. It's live.
I think he probably had someone in the audience who fed the numbers to him beforehand – Occam's razor: the simplest explanation is usually the best.
There isn't an audience.
Even if it was broadcast 'live' there would probably be a five-minute transmission delay on the lottery broadcast, so as to allow for any hitches/mad nudist audience members/Shaun Ryder, so that would still provide enough time to set up the actual, directly live, Derren Brown thing.
There isn't an audience, and there isn't a transmission delay (well there will be a 2 second or something digital transmission delay, but not the 10 minutes or so you'd need to do this. The BBC & Camelot have had spokespeople on every news program saying this for the last couple of days, so I imagine it is true.
You're completely missing the point though, delay is completely irrelevant, there is no mystery as to how he got hold of the numbers. He got the numbers by watching the lottery show, same as anyone else did. The mystery is in how he got the numbers onto the balls in the 20 seconds between finding them out, and turning round the balls.
If he'd have known the numbers in advance, he'd have shown them in advance. The fact he only showed the numbers after the draw, just demonstrates that they were not on the balls until after the draw and he didn't actually know them until after the draw.
Joe
