I'm not sure if concerete seeing/doing is the only, or even most effective, way to learn.
I've often learned by recalling the concepts from a lecture, reasoning about the material, and imagining what some of the problems would look like while sketching out solutions in my head. It's not any easier than doing the homework, but it is more convenient and flexible. And it can sometimes help with physical skills.
Theory is still important because it communicates how other people understand what they do. But it's certainly not a replacement for reasoning and experience.
I've found the best model of learning is to... not have a "learning process" in the first place. I try to understand as much as possible from as many angles as possible. This means big concepts, minutae, my ideas, other people's philosophies, imagined scenarios, hands-on-experiences, tangentially related concepts, and so on. Being able to answer questions or do the task is more of a side-effect than the intent.
I've often learned by recalling the concepts from a lecture, reasoning about the material, and imagining what some of the problems would look like while sketching out solutions in my head. It's not any easier than doing the homework, but it is more convenient and flexible. And it can sometimes help with physical skills.
Theory is still important because it communicates how other people understand what they do. But it's certainly not a replacement for reasoning and experience.
I've found the best model of learning is to... not have a "learning process" in the first place. I try to understand as much as possible from as many angles as possible. This means big concepts, minutae, my ideas, other people's philosophies, imagined scenarios, hands-on-experiences, tangentially related concepts, and so on. Being able to answer questions or do the task is more of a side-effect than the intent.