Basically to sum it up, the author mentions a very simple question that he asks potential programming candidates to solve. This kind of question is the kind of question you can solve by making it through two/three chapters in any programming book, yet the number of people, even senior level developers, that can't get it is astonishing.
I remember that article - I quickly reassured my self by writing fizz-buzz in Perl, Ruby and PLSQL (my three most used languages) - no great achievement, but I am better than the majority of comp-sci grads apparently!
Basically to sum it up, the author mentions a very simple question that he asks potential programming candidates to solve. This kind of question is the kind of question you can solve by making it through two/three chapters in any programming book, yet the number of people, even senior level developers, that can't get it is astonishing.