The Great Shift caused plenty of panic around the world, but Brian was not interested in questioning the hows and the why of what happened. He was just going to enjoy the ride. In fact, he saw a once in a lifetime opportunity in front of him -- Correction: he saw TWO once in a lifetime opportunities in front of him -- and he was going to enjoy it. Every second of it, for as long as it lasted. Finding out he'd be in his new body forever didn't bother him in the least. He now had plenty of new ways to pass the time.