They had a question pertaining to air / fuel. Specifically, a customer had asked them for an air fuel readout, which they do not have the equipment for, and he wanted to know if he could add it to his existing set up and "what it is and what will it do for me?"
Okay, let me step back a second. This question is acceptable from my mother, not a "tuner" who claims to build race motorcycles.
I had no words. literally so flabbergasted by this question that I could not find words to explain to this person what air fuel ratios were and why they mattered.
Have this Amazon playing in the snow: