Draw the System Before Memorizing the Parts

Before memorizing details, sketch how the pieces connect. A rough diagram of the whole system — even if it's messy and incomplete — gives you a structure to hang facts on. Without the big picture, details are just floating noise. They might stick temporarily, but they won't organize themselves into understanding.

This works for anything: biology, business models, software architecture, history. Drawing forces you to think about relationships, not just individual facts. Where does this piece fit? What causes what? What depends on what? Those questions are where real understanding lives, and a simple sketch surfaces them faster than any amount of re-reading.