Very true; at least when I sat with my classmates during my graduation from medical school, the dean said to us: “Ten years from now half of what we taught you will turn out to be wrong.” That was real science talking.
I remember my Fluid Dynamics prof in my senior spring telling us that everything we learned in four years of the ME program was never going to be used again...but we had learned a highly disciplined method to tackle and solve problems. He was quite right.