Ok, so it's like this. I've signed up to be a dude in industry who helps out at a local school with their engineering club. It's a voluntary thing, but some of these kids will be 18 year olds who have a fair idea of what's going on, and I've only just really come out of uni, so the potential knowledge gap isn't necessarily that big. Anyway, I'm really looking forward to it (and the project looks like it's gonna kick arse) but I have my reservations about one thing: How do you teachery types deal with a situation when you just don't know how to do something the kids are expecting of you? Clearly the obvious thing to do is just to admit you don't know/can't do it, and that you'll try and find out for 'next time', but supposing you just can't, what do you do?