I think it might also depend on your goals. Like how fast you want to learn something. If you have less than ideal time, then maybe more structured learning is necessary. If you have more time then periods of structureless/passive learning could be beneficial.
I think it might also depend on your goals. Like how fast you want to learn something. If you have less than ideal time, then maybe more structured learning is necessary. If you have more time then periods of structureless/passive learning could be beneficial.