Or we could stop asking students trivia and force them to think. Most of my graduate school exams were open book + notes but it hardly helped. You had to demonstrate knowledge by producing a novel solution to the problem most of the time. Not novel as in new research, but novel in the sense you weren't just regurgitating factoids from the books. I also had tons of open book and open note advanced math classes. The problems were made in such a way you had to make a connection with the material and link pieces together in non-obvious ways. In those classes I retained more information even to today.

Teaching, even at the collegiate level, has become "how can I do the least so I can do what I want". Tenured research professors generally make terrible teachers...perhaps we need professional teachers.