there was already an area of research, the autonomic nervous system, which was relatively neglected. It was between cardiology and neurology, and these areas in between are often the province of neither specialty, and so can lag behind. And that was the area I chose and this changed the second half of my life, if you like, because I then set up a laboratory.

I was fortunate even from that point of view because I got a very good research collaboration agreement with Upjohn, the American Upjohn company. So that could help me to go on with my research.

I knew what I had done wrong. I had followed the experts and put the money I had in television. The second time around I spent almost no money on television. The only money I spent on television, I spent on Ted Turner's station, late at night on something called Creature Feature and wrestling. Because those were things that I knew people looked at. But we spent most of our money organizing people door-to-door.

I would like to have been concerned about this existential threat sooner.

I would say there are many challenges, and that's kind of what's hard about it. And my particular thesis, since leaving Google and doing my own company, is that building a quantum computer is a little bit harder than the scientists think about because of the system engineering. Building a powerful computer is hard. So what we're particularly working on is the manufacturing of qubits and doing that much better than what people are doing right now. I really enjoyed being in academia, and even at Google working on that. But I really enjoy right now trying to think very practically about what we have to do to get this to work. And what kind of people we have to collaborate with in order to put all the pieces together and build a quantum computer in a cost effective, economic way that makes business sense.