To the question "What do you think makes some programmers 10 or 100 times more productive than others?"
Guido van Rossum answers "Genetic differet brain structure." (sic)
Tim Bray answers "The surprising variability of the human mind."
I think they're basically the same answer, but Tim Bray's is the very American politically correct "hooray to everybody!" version. Given that the title of the blog post refers to "great programmers", Guido's answer could be read as "my brain is super awesome and yours is not". Which, I bet, is not what he meant.