On my first cruise (on the Nimitz), the barber shop that was set aside for the air wing folks had two dudes who cut hair. The striking aspect of these two young men was that one was expertly coifed and the other obviously worked his mop with a stand mixer. The astounding thing to me was that a lot of the customers ("victims") went to the guy with the great hair, not understanding that the barbers cut each others' hair. You could tell who was and was not a deep thinker as you wandered the passageways and checked the dos (many of which were don'ts). Fortunately, being at sea for months covered many hair sins.
That's Tim, min-maxing life.