This is a neat argument for spaced repetition, which I think is a great idea and generally works very well. That said, though, I don't think it's a good idea to

This is a neat argument for spaced repetition, which I think is a great idea and generally works very well. That said, though, I don't think it's a good idea to conflate knowledge with intelligence in this context; knowledge is concrete and measurable, while intelligence is, at best, nebulous and difficult to measure. Knowing things is really important, but I don't think learning makes you "smart"; it just makes you know more things.