We in science are spoiled by the success of mathematics. Mathematics is the study of problems so simple that they have good solutions.

Two people can work on a problem better than one.

It was a bizarre business at the time, you could be working on cryptographic projects for the government, still they wouldn't tell you anything about what they wanted you to do.W

In about 1970, I decided I was an engineer. I continued to do work that was almost entirely mathematical, but I realized I was interested in building things, and that made me an engineer!

A good theory in sociology would be very practical, I assume. It would help you to understand how societies behave, how people make decisions. That problem is too complicated. Nobody knows how to do that.

I have always worked on what interests me.