the.com/stereotype
A mental shortcut that's almost always too lazy to be right.
means A fixed, oversimplified belief about a whole group, applied to every member regardless of facts.
from From the printing world: a stereotype was a solid metal plate that reproduced the same page endlessly, coined in 1798 French as stereotype, from Greek stereos (solid) plus typos (impression) — a literal unchanging mold, later borrowed for minds that print the same image of people forever.
Printing pastOriginally a fixed plate copying one page repeatedly.
Mental senseAcquired its bias meaning around the 1920s.
Cliche cousinSame press gave us the word cliche.