Your brain does not record information the way a phone records a video. Memory is not stored in one place — it is built through connections between neurons, and those connections strengthen every time you use them and weaken when you do not. This matters for how you study because it means two things: first, you cannot passively absorb information by being near it — your brain needs to actively process it for it to stick. Second, information reviewed once is almost always forgotten within a week unless you return to it. The brain treats information it never revisits as unnecessary and quietly removes it. Memory is not about how smart you are. It is about how you use the brain you have.