What’s a Mark’s? From the context I get that it’s some sort of science or math reference tome.
That is generally an indication of a bad day in this business.
Marks’ Standard Handbook for Mechanical Engineers
Stranger
I always understood it to be a cute way for them to point out that they’re experts of a sort, and presumably had the know-how to do these things safely, AND that if there were things they didn’t understand, they knew enough to bring in actual SMEs for those things.
Basically saying “We do this stuff for a living; you don’t, so don’t try making a giant water slide into a pond/blowing up a water heater/ because you saw it on our show.”