I don't think that's the argument being made. But that by learning X or Y, you can add a lot of substance or perspectives to your life that you may not have had

I don't think that's the argument being made. But that by learning X or Y, you can add a lot of substance or perspectives to your life that you may not have had before. These 'things' more likely than not can bring many positives to aspects of your life that aren't related.