Anyone else watch the video and notice all the falsehoods? Allegedly, previous to WS, the only alternatives were flash and polling! Except that long-polling i

Anyone else watch the video and notice all the falsehoods? Allegedly, previous to WS, the only alternatives were flash and polling! Except that long-polling isn't really polling in any meaningful sense (they very clearly describe polling that isn't so-called long-polling), and in particular doesn't have the latency-vs-bandwidth tradeoff and impact that actual polling has. Allegedly, WS are "exponentially more efficient"! Except that they're not, they're more efficient by a constant factor. Allegedly, the range of bandwidth saving is 99.8% to 99.9%! Except that obviously if you're passing enough data around in few enough responses, the bandwith savings could be more like 5% or 10%, and I find it hard to believe that typical uses actually save over 50%. I sure do think web sockets are sweet, but wouldn't it be nice if there was some way to hold liars accountable?