Definition: The delusional assumption that skilled laborers like electricians or plumbers can’t grasp “complex” subjects like math or logic. Symptoms include asking a welder if they know what gravity is or explaining Ohm’s Law to an engineer. Often stems from ivory tower syndrome and ends with the condescender awkwardly backtracking when their toilet wiring explodes.
Example: Karen hit me with trade-blindness at the BBQ, asking if my carpentry job “involved much counting.” I detailed the structural load calculations for her rotting deck and watched her melt into the guacamole.