A few weeks ago, Alex Gaynor gave a talk at waza entitled "Why Python, Ruby, and Javascript are slow". A video now available, and it is a good watch if you use any of these languages. Even if you don't, or have just viewed the slides, it is still thought provoking. He rightly cites (unsurprising, given his pypy experience) the old rags of dynamic typing or monkey patching being slow as being the m