https://en.wikipedia.org/wiki/Critical_thinking#Skills https://en.wikipedia.org/wiki/Scientific_method#Elements_of_...
Obviously, no scientist or engineer has ever stopped to ask themselves "why does it..." or "what if it doesn't actually do..." or "maybe it's not x, but y instead?"
It'd be wise to remember that the sciences were once called "natural philosophy."
Liberal arts courses on the other hand are mostly memorization and regurgitation of the ideology currently favored by the academia's current regime. Before they moved to "~ studies" majors, liberal arts majors used to study the works written and drawn by scientists and mathematicians and engineers. It's easy to see why the humanities would prefer "critical thinking" to be redefined as something fuzzy enough to require no original thought or even an attempt at reaching a logical conclusion.