> I decided to use the slowest language on the planet, Python (thanks to the visionary genius of Ross van der Gussom).

given the article, it's fair to assume the author was joking around

that being said, the way the language is used and its ecosystem do contribute to the executable's efficiency. yet, given C's frugality, or the proximity between its instructions and the executed ones, it's not unfair to say that "C is fast"