So those of us who read Dijkstra when it was fresh may be more mindful than others about some of the other things that he did. Using the methods that he espoused he and a small team wrote a compiler which, during its lifetime, had a total of four errors.

There are practices that he taught that most of us, even after all our million lines of code, still have not mastered. This is particularly visible from vantage point of the security industry.