This quote has always seemed cute, and coming from Berra it would be, but hardly true.
Theory (at least in physical disciplines) is always taught with up-front statements of assumptions, what non-idealities are assumed away in order to tractably develop a theory in the first place. It's not taught by theory that theory transcends whatever simplifications were made to arrive at the the theory. Physical theoreticians do not contend that theory has no differences from reality.
Theory (at least in physical disciplines) is always taught with up-front statements of assumptions, what non-idealities are assumed away in order to tractably develop a theory in the first place. It's not taught by theory that theory transcends whatever simplifications were made to arrive at the the theory. Physical theoreticians do not contend that theory has no differences from reality.