Noting two aesthetics: Learn deep vs. learn wide. The first values depth of learning, the second breadth.
In the first aesthetic, one aspires to be the wise wizard who has studied half the library. The wizard knows more about magic than you will ever know. They know the right spell for every occasion.
In the second, one aspires to be the crafty merchant who knows enough about everything they deal with to make a living. Most things they know, they don't know all that well — but they don't need to. It doesn't stop them from getting things done.