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Over the years I have tried to develop something which is technically assured.

So I went for engineering, specifically product design, which I enjoyed.

I discovered at an early age that all I've ever wanted to do is design.

It is true I had been successful on a small scale in overcoming one of the main difficulties in the new process, but there was still much to invent, and much that at that period I necessarily knew nothing about.

I was always pretty good at designing things.

I'm an inventor. I became interested in long-term trends because an invention has to make sense in the world in which it is finished, not the world in which it is started.

I had to learn everything about manufacturing, patents and how to run a business, and eventually I came up with an prototype that worked.

When I was 22, I realised I wanted to be an inventor.

I've been an amature inventor for a long time.

Probably some of the projects I chose to do after that had more to do with what people thought of me. The industry was very open and probably hoping that I could do anything.