The internet is full of tutorials explaining those little tricks about AJAX, how to handle XHRequests and all that low level stuff, but nobody tells you how to design the entire application, nobody gives you the overview on how all these things should work together. What good is knowing all those fragments if the developer is unable to put them together to a real use?
He’s has quite a valid point. It’s difficult to take the bits and piece one has learned and really figure out how to go about putting them together into a useful web application. A great read.