Ruby is too slow for programming competitions
<i>Sure, I knew Ruby wasn’t going to be zomg fast, but I always assumed that if I chose the right solution and wrote in an efficient manner (memoizing, storing values/lookups that would be used later, limiting search spaces, etc), my ability to write code quickly and concisely mattered more than sheer processing speed.</i><p><i>I was wrong.</i><p>Sure, the author is wrong, but not because Ruby is slow (it is, though). He's wrong, because he did not find the right solution for the problem. Instead, he wrote a brute-force solution with a simple optimization, and did not realize that this is the real cause of his code under-performing, blaming the Ruby's slowness for it, when he really should have blamed the Dunning-Kruger effect.