[jovial_cavalier]

Our advances in the last 50 years have largely been in engineering, not science. You could probably take a random physics professor from 1970 and they'd not sweat too much trying to teach physics at the graduate level today.

[telotortium]

But a biology professor from that time period would have a lot of catching up to do, perhaps too much, especially (but not only) if any part of their work touched molecular biology or genetics.