Originally Posted by
Mad (Flt) Scientist
Because the simulator "matches where it touches" - it reproduces the manoeuvres specified by the data provided, and not necessarily any other manoeuvre. In practice, sims do better than that minimum, because the manoeuvres matched do cover reasonable variety of manoeuvres and across a fair bit of the envelope.
But go far outside the envelope of the specific manoeuvres and you are on your own. I suspect that is what the test pilot statement likely alludes to.
The original post clarified (cut from the quotes):
that means the fact that a small stick input will give much more important nose up or down effect than at a lower altitude.
i.e. claiming the real thing is a lot twitchier than the sim.
It shouldn't be - ample data should be available for that, and
if that statement is true, I would say the sims need fixing.