[The sentiment is one that Zenyatta appreciates wholeheartedly, and he is fully prepared to comment on how sadly lacking it is in his own world when Engineer falters and peers at him like he has instead expressed an interest in nuclear armaments.

He hums in response, perhaps more casually than the situation warrants.]

I am capable of detecting a great many things, but I have never come across this particular sensation. It is somewhat like being rusted over, but with a greater sense of urgency. [Which is unpleasant, of course, but one cannot linger on the negatives.] Already my horizons are being expanded! This world is full of surprises, is it not?