....Do we have to use ........ nautical miles per minute instead of knots, instead of kts...this could go on forever
Again you make the point, and so succinctly
When under pressure (and maybe feeling a little bit flushed, eh Positivegee?) it is so easy to type something that
looks ok into a keyboard, only for it to come back and bite you later. And the more common the task the greater the difficulty in spotting the error.
Consider for example the effect of 'pattern interrupt' (google it) upon your pre-flight programming. You've got the preliminary via datalink, you're reading out the numbers and the other chap/ess is punching in the figures, you cross check but during those vital moments yet another person comes in with a query. Missing pax/bags/tug/odd question etc etc. It's actually the 'odd question' that might be your undoing - the rest you're used to fielding on a daily basis. Both your minds do a subtle 'eh?' and the interrupt is complete. Not saying that's what happened, just that it can.
Whatever the mistake, to err is human. You're right that on these forums (
fora if you'd prefer the Latin) it doesn't matter very much. But it does help to illustrate the point.
Oh, I think if you use your preferred
'nautical miles per minute.. instead of knots' it will be over quicker than you think