[solidasparagus]

It's a lazy benchmark that compares two functions without clarifying that they do different things. If this article was pointing out that the numpy function had poor UX, that would be valid, but presenting a table that suggests Clojure does the same work 200 times faster is blatantly misleading. If you're going to write a custom implementation for one side of the benchmark you either need to (a) make sure it does the same thing as the other side of the benchmark or (b) write a custom implementation for both sides.