Read, think, apply

Re-reading feels productive, but decades of cognitive science show it barely moves the needle. The single most effective study technique is active recall: pulling information out of your head, not putting it in.

Start with a blank page. Write everything you remember about a topic. Check against your notes. Repeat tomorrow. That's it — the loop is simple, the results are not.

Pair active recall with spaced repetition and you have the closest thing to a learning superpower we know of.

Don't read a paper front to back. Start with the abstract, jump to the figures, then read the discussion. Only then decide if the methods deserve your time.

Ask three questions: what did they claim, what did they actually test, and how strong is the evidence?

A dollar saved today isn't a dollar. Given time and a modest return, it doubles, and doubles again. That doubling is compounding.

The lesson: start early, be patient, and let time do the heavy lifting.

Every good essay makes a claim, supports it with evidence, and considers what might be wrong with it. That's the shape.

Introduction sets the stakes. Body paragraphs each carry one idea. Conclusion earns its place by saying something new.

A function is a rule that takes an input and returns exactly one output. That's the whole idea. Everything else — graphs, notation, derivatives — is decoration.

Once you see functions everywhere, math starts to feel less like memorization and more like a language you can read.

Read laterally: open new tabs and see who's saying what. Check the source, the date, and whether independent outlets tell the same story.

If a claim triggers a strong emotion, pause. That's usually the moment misinformation slips past our defenses.