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What is Ten percent rule?
You must be 10% smarter than the equipment you are trying to operate.
Person #1: "Will you call maintenance and get the key? I've been pushing on this door for 5 minutes, and it is definitely locked!"
Person #2: Pulls door open and walks through, saying "Ten percent rule."
Ten percent rule - video
Ten percent rule - what is it?
You must be ten percent smarter than the equipment you attempt to operate.
I tried to fax you but I failed the ten percent rule.