[Twirrim]

So rather than spend 10-20 minutes reading about numpy, the author wrote 3 other implementations...?

The fact that they ran the C code without the optimisation flags and compared it that way makes me think Javascript was what they actually wanted to write this one in anyway.

[Etheryte]

The author, by the looks of it from the article, is a uni student. Rather than straw-manning this into a language war, we should laude the fact that they managed to write the same thing in a number of different languages to begin with.