HD
you are a silly old fuddy duddy - but it does matter. Unfortunately because NATS have cut the college course to the bear minimum, the level of knowledge of people hitting live training is not as high as it used to be - and some would say it is not as high as it needs to be.
You now end up having to teach trainees things on live radar/tower that they should have been told about in basic training.
I'm a not-so-old fuddy duddy