Harry Cliff: I was very lucky that I joined the experiment I work on at the LHC in 2008, just as we were switching on, and there are people in my research group who have been working on it for three decades, their entire careers on one machine. So I think the first conversations about the LHC were in 1976, and you start planning the machine without the technology that you know you're going to need to be able to build it. So the computing power did not exist in the early '90s when design work began in earnest. One of the big detectors which record these collisions, they didn't think there was technology that could withstand the radiation that would be created in the LHC, so there was basically a lump of lead in the middle of this object with some detectors around the outside, but subsequently we have developed technology. So you have to rely on people's ingenuity, that they will solve the problems, but it may be a decade or more down the line.