For me a language is easier to learn if I can actually use it. For me his rule of thumb is less a rule and more like how my mind works (and to agree all I guess

For me a language is easier to learn if I can actually use it. For me his rule of thumb is less a rule and more like how my mind works (and to agree all I guess). I can memorize unused facts, but it gets lost in big life changes usually which is really frustrating. edit: add side note