If you learn something for the first time, does that make you knowledgeable? Or do you have to be an expert in that domain? Or perhaps it's somewhere near the middle? The problem with treating knowledge as concrete - as a noun-is that such an approach suggests there is a specific point at which what you know becomes an absolute truth.
Learning how to learn: how to make your ROI on reading explode Learning is a heavily misunderstood concept. As a paradigm example of deep work, we understand that, when reading, directing your full attention to the material at hand is essential. Grasping complex information is hard. But this is only half the battle.