At the moment I am taking a very careful look at some of the work which we have done in the past.

So if I could just go back now to something which I am sure we should cover here regarding our original scenario: we have, in fact, four ways - four major potential lines of research.

I don't know whether you have done your calculations but, about two or three years back, I did a first assessment of what the first successful device would be worth and it came out at about 300 trillion dollars.

Scientists are really very conscious of the fact that they stand on the shoulders of an enormous tree of preceding workers and that their own contribution is not so enormous.