I was just sitting in a business lecture (long story but lovely business librarian colleague invited me) for 2nd and 3rd year Uni students (say 19 to 20ish typically, not that it matters) being delivered by a VP of Gartner and two underlings. The VP was a former brigadier who told a story about some training they were sent to do in the New Hebrides a while back.
After they'd worked out from a world atlas [1] that this was not off the coast of Scotland but islands north of Australia and it would be a five day trip by Hercules to get there, they read the "enemy paragraph" (which was a new term to me) and it said something about the "rebel leader is <very British sounding name> and he has 30 or 40 insurgents armed with bows and arrows."
One of the soldiers said to the brigadier "I like those odds."
Hah, I thought. Clearly you've not got a Traveller referee running things...
Bows and arrows yes, but the briefing didn't mention they have access to a downed Navy ship...
... Ancient device...
... psionically linked flying steeds
...
While I'm here:
He told another story about the introduction of tech bringing loads of info together from different sources on the wall of a bunker. Young men adapted easily but they brought a general in who couldn't deal with the change from the horizontal way of looking at the situation to the vertical. He wanted his 'bird box' back (another new expression for me but, he said, the kind of table you see in WWII films with markers being moved round by sticks). Apparently they went off and came back with a large screen they could site horizontally so the general could relate.
The VP said you can relearn but it is a different mental conditioning.
The ObTravs of both are hopefully obvious.
tc
[1] I might have been more tickled by the idea of the British Army using such 'tech' even way back. But i once had to drive across Australia and did it with a very slender world atlas in which Oz was just one A4/US Letter page. Not a problem! Head West out of Townsville and just keep going... automatic car too so I don't think I changed gear for 8 hours.