Just more working memory. If you know which things that you forgot you need when to remember, again it's not harder but just refresh and the next is easier. Som

Just more working memory. If you know which things that you forgot you need when to remember, again it's not harder but just refresh and the next is easier. Sometimes to learn a new conception you have to suspend few others. Harder way you learn with every step back to refresh, that you need to cross-reference.