The problem I have is where you have a driver who puts another driver in a situation where they have to yield or there'll be a crash. That's what Alonso and Hamilton both did today. What's the difference between Alonso moving across on Vettel at the start and dive-bombing someone from 50 metres back? In both cases you're relying on the other person realising you're there and yielding to stop a collision. In Hungary Schumacher almost did this to Barrichello but he left just enough room. So many people went crazy about it, calling for Schumacher to be penalised in some way. Alonso was more ruthless than that today and it was only because Vettel yielded that there wasn't a collision.