From what I was able to see of the mechanism, the resulting shave is impossible. I call bullshit. Note the camera moves away from the man being shaved for quite a while.
Or, you could look the interviewer in the eye, ask her what that question has to do with the job in question and while she is stammering out an answer, tell her to stop wasting your time and get serious.
The point of an interview is for both people to evaluate the potential business relationship. Who would want to work for that kind of person?
Every time I get told to use a stronger password, I wonder who appointed them to be the password police? I know the risks of using "weak" passwords. Warn me and then let me be as foolish as I wish.
While the modern single-family-house is usually built and furnished with high-tech wold products, the modern office is very like his steel predictions.
So, how did the researchers figure out what worked best? Give them a test? This study only says that practice taking tests makes one better at taking tests.
The point of an interview is for both people to evaluate the potential business relationship. Who would want to work for that kind of person?