the first computer magazine. He sometimes wrote for the magazine under the pseudonym "Neil D. MacDonald".

He was involved in a "hazards research" at Prudential Insurance, with the goal of determining the greatest hazards facing the modern world. Berkeley came to the conclusion that nuclear war was the biggest existential threat to humanity. After the company dropped the project, Berkeley was forbidden to work on anti-nuclear efforts, even on his own time, prompting him to quit Prudential in 1948 and found his own actuary and computing