I agree, but I do have one nitpick: I've seen this suggestion several places, but I don't really think it's accurate to say that JS engine improvements are lev

I agree, but I do have one nitpick: I've seen this suggestion several places, but I don't really think it's accurate to say that JS engine improvements are levelling off. See http://blog.chromium.org/2010/12/new-crankshaft-for-v8.html http://blog.chromium.org/2010/12/new-crankshaft-for-v8.html Improvements to SunSpider scores, on the other hand, are levelling off, as you note.