Bletchleyite
Veteran Member
I assumed it was in case you fell awkwardly (a la cycle helmets).
If the helmets don’t provide effective protection, why do the other instructors ask people to wear them?! There’s definitely an interesting parallel with masks there...
They don't provide useful protection when instructing, because if you're stood on the floor you shouldn't be in a position where you could fall awkwardly.
On an artificial wall they are indeed worn by climbers to protect against an awkward fall, which in my observation mostly happens just after reaching the ground - the climber often doesn't regain their footing properly, stumbles forward and bangs their head on the wall. However I find it hypocritical to ask people to wear one without doing so myself.

