One Class of Jobs That Even the Most Sophisticated AI Can't Replace

I think this guy is WAY too optimistic about the jobs he says A.I. won't be able to replace. Even non-sentient A.I. should be able to use enough social observation to learn what to say and how to act to eventually replace humans in social fields:

http://bigthink.com/videos/andrew-mcafee-one-class-of-jobs-that-even-the-most-sophisticated-ai-cant-replace