"And another observation at PVG - is it me, or is ATC totally inefficient here? I noticed that sometimes there is separation of 4-5 mins of departing flights even in situations with no arriving aircraft. Also, it seems sometimes use of runways is totally illogical. Flights going to T2 use the runway at the other side, while there seems to be plenty of available space at the closest runway. Very odd."
- they know things that you don't know or see.