I agree with everything you have said in post 28 John. Add to that the subtle differences in terminology between European built and certificated aircraft verses US built and certificated aircraft. Pilots historically are not strong with this subject, that's why we are presented with ready made takeoff charts and special procedures. The problem today is that when that information is presented to a captain who knows his stuff, looks at the data and "knows" this can't possibly be right for this runway. This is where we are at today and it's in every airline, then someone dreams up a standard operating procedure change which has a fundamental flaw. it's only a matter of time before all the holes line up, I think we have been lucky but for how much longer.