Should I worry that my advisor will get sick of being a professor and move to industry? My advisor is a first year professor (in CS) and he seems really busy and stressed all the time.  Before becoming a professor, he was in industry, where he probably had to do a lot less work and could spend more time with his family.  Should I worry that he'll move back to industry in a year or two because he's decided being a professor is not for him?
Should I worry that he'll move back to industry in a year or two because he's decided being a professor is not for him?


This is probably not worth worrying about, although it could happen.  Computer scientists who leave industry for academia generally really want to be in academia and don't often return to industry quickly.

If you're concerned, one way to get a feeling for his perspective is to ask him about his experience with industrial and academic jobs.  This is a very natural question, since he knows both sides well and this information is relevant to your own future plans.  You could follow up by asking him how he chose academia over industry if he leaves that vague.  If he sounds unhappy with his decision, you could ask whether he thinks he might return to industry someday.  I bet this conversation will reassure you that he wants to be in academia, and at least you'll find out if your fears are justified.

Incidentally, I'm skeptical that computer scientists in industry have a lot less work and spend more time with their families.  The ones I've met spend their time a little differently than academics do but seem rather busy as well.