The last week must have been a bit of a rollercoaster ride for you. Did the announcement at CERN of what looks like the Higgs boson take you by surprise?

The week before all this started happening, I was at a physics summer school in Sicily. I didn't take any Swiss francs with me and my travel insurance policy expired the day I was supposed to fly back to Edinburgh.

As the week went on, rumours began to fly, but it wasn't until the Saturday before the announcement that we knew for certain that something was up. We got a phone call from John Ellis, the former head of theoretical physics at CERN, saying, "Tell Peter that if he doesn't come to CERN on Wednesday, he will very probably regret it." I said, very well then, I'll go.

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