Wotsyors
Sorry to offend, but the thread was about definitions.
I do not and did not advocate stepping outside the limits, be they demonstrated or actual limits.
What I very definitely cautioned was that venturing outside ANY published values puts one in the realm of test pilots
and the focussed attention of insurers.
I also mentioned the "PRUDENT pilot" at least twice to clarify. Sorry you did not pick up on that.
The flight planning operational requirement applies to a limit.
Genghis also clarified the definitions, the purpose of the thread.
For a GA aircraft, demonstrated is what was available on the day of certification, nothing more.
For transport category aircraft, demonstrated is most likely not appropriate, a limiting value is sought,
and this means that if what's available on the day is a bit soft,
then the certification may take many attempts over many days to obtain the parameters and boundaries sought.
Hence the Greenland and Sweden trips, also the B777 hot trials in the Australian desert.
Again, sorry if somehow I offended, it was not my intent.