The sorts of folks that get invited and accept these sorts of engagements are frequently self absorbed and out of touch. The hubris needed to think some randos want to hear you speak… Only hope is if the person has some particular reason they would make sense (e.g. if they are an alumni, then at least they might feel like they have a connection).

The same general phenomenon as when they thought a centerpiece of the Xbox One release should be… DVRing the Price is Right… The same as when blizzard said “Do you guys not have phones?”

If you are lucky, a speaker will just say nothing vaguely specifically.