Re: Richard Feynman
GT noted, "In the Feynman incident the safes were all using the shipped, default, and ubiquitous combination."
I've read about a half dozen books about this, including at least one by Feynman himself. They don't match your "all" claim as quoted above. He tells of several different approaches (brute search, birthdays, numerical constants, social engineering, etc.), not simply dialing in an unchanged default combination.