I read this article and I was “ok memorization, but is that learning??” And even after perusing the supermemo website, and so on I’m still not convinced that this isn’t anything more than memorization for exams.

There’s a reason why this is popular in the “rationalist” community: they’re mostly college kids. I have never seen a coworker or other industry professional use any of these tools.

Why, because doing isn’t the same as remembering. Over time you remember by doing. That’s it.