That's an understatement. [he smiles again, but a little honestly. the microbots fall back to the ground, Callaghan's mental command of 'keep up' enough for them to focus on that.] I taught robotics, myself, but I oversaw a number of other projects...

[...and then he trails off, smile fading a bit]

It's a very narrow frequency- that sort of situation hasn't yet come up.