Jack of All Trades, Master of None

Every morning, Sub holds a meeting with the entire crew to review announcements, events, training, etc. This morning, his topic of choice was tire pressure on the utility vehicles. He provided an example of a vehicle which requires higher pressure in the front tires than in the rear tires. Then, he was corrected by the mechanic.

Sub proceeded to place a bet with said mechanic, in full view of the entire staff, and Sub cited a world-famous tire authority. "Ob said so."

Would you disregard the knowledge of someone who has been a mechanic for forty years and listen to someone who doesn't even do his own job?

Incidentally, the reason Sub chose to discuss tire pressure is because the tires of one of Ob's vehicles were aired up incorrectly.