All this talk about rwy lenghths and high hot airfields. Nothing to do with those at all. All to do with tweaking and twiddling with an aeroplane to fit the bill and having to write up some software because it is prone to go tits up and that no one has yet managed to train a tame gorilla to take the pilot`s seat. May be one day that too will be possible, but they better be ready to swap the control cables for ships hawsers.