All nurses were adequately trained within 2 years. That's how it was, how it used to be, and no-one batted an eyelid.

This is not true. There have always been professional four year nursing degrees around for nursing, at some very good schools. The fact that a 2 or 3 year program was more common or considered "adequate" doesn't mean the others weren't there and weren't better. They were, on both counts.

SRS