Also related to your points on not-learning-enough:
You should always assume that the forgetting curve applies to you. What you don’t reinforce dies out.
I think that there are some skills for which the above doesn’t necessarily apply (e.g. riding a bike), but I haven’t thought enough to figure out what distinguishes these skills (maybe things more mechanical / physical in nature).
Also related to your points on not-learning-enough: You should always assume that the forgetting curve applies to you. What you don’t reinforce dies out.
I think that there are some skills for which the above doesn’t necessarily apply (e.g. riding a bike), but I haven’t thought enough to figure out what distinguishes these skills (maybe things more mechanical / physical in nature).