You're certainly welcome to, so long as you don't scare them off climbing ;-)
I should also note that I am in no way professionally qualified to talk about safety in climbing, or risk analysis in general. I just like to climb, and prefer to do so safely.
No problem, I'll frame this as a 'Scoutmaster's Minute' where we talk philosophy and do Q&A. Give them something to think about as the go out the door.
