I like to think that since I was about 19, I have studied human decision-making and problem-solving.
When computers came along, I felt for the first time that I had the proper tools for the kind of theoretical work I wanted to do. So I moved over to that, and that got me into psychology.
One of the first rules of science is if somebody delivers a secret weapon to you, you better use it.
In the computer field, the moment of truth is a running program; all else is prophecy.
The proper study of mankind is the science of design.
By a combination of formal training and self study, the latter continuing systematically well into the 1940s, I was able to gain a broad base of knowledge in economics and political science, together with reasonable skills in advanced mathematics, symbolic logic, and mathematical statistics.