What’s the point of school if we won’t remember most of the things we learn?

You can spend 8 months taking genetics. 2 years later, somebody asks you what a histone is, and you’ll look at them like a deer in the headlights as if you didn’t hear that word a thousand times in genetics. What I’m saying is, people are forgetful. We can hardly remember what we ate last week. How do you expect us to learn AND retain the myriad of topics we learn in school?