> Using bleeding edge features will always cause cross-browser problems like this Well, the problem is that these aren't bleeding edge features. FileSystem API

> Using bleeding edge features will always cause cross-browser problems like this Well, the problem is that these aren't bleeding edge features. FileSystem API is the most bleeding of all mentioned and that's been in stable Chrome for almost a year. The others have been available in some combination of stable browsers for multiple years. (And most were specced 3+ years ago) Compare this sort of behavior with something like Windows Metro, iOS, Android, where apps are using newly introduced APIs within weeks of release, and I think he's justified in wanting better compatibility out of the web platform.