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    This seems very limited to just the GUI context. In a webserver case, I'd say the main benefit is that it preventing request threads from being "useless" while they wait for blocking IO calls. I think it's a scalability issue as much as it is a responsiveness issue. Commented Jun 8, 2016 at 6:26
  • @kai: Yep, that's the whole point: keep the process as busy as possible to avoid context switch as much as possible. Commented Jun 8, 2016 at 6:31
  • in asynchronous mode most of the time events are pushed into a queue. because of this you can prioritise, split, filtering, doubling up according to your need.... which in turn makes you app smarter, and faster. Commented Nov 2, 2016 at 14:34