How learning works, in plain words.
Short articles on memory, attention and the animal on our logo. Each one answers its question in the first two sentences and lists the research it comes from.
The science of learning.
How to remember what you learn.
Start here. Why memory fades, the four methods that keep it, and a plan you can use on any topic.
Updated November 10, 2026The forgetting curve.
Ebbinghaus’s 1885 numbers, the 2015 replication, and the two things that flatten the curve.
Updated November 9, 2026Retrieval practice.
Pulling an answer out of memory beats reading it again. Four studies, and the reason it feels worse than it works.
Updated November 9, 2026Interleaving.
Mixed practice feels worse and tests better. The studies, the size of the effect, and where it does not work.
Updated November 9, 2026Desirable difficulty.
Why the study that feels slow is the study that stays. The four classic difficulties, and one that turned out not to work.
Updated November 10, 2026
AI and learning.
Does AI make you dumber?
No proof of lost intelligence. Good proof that a task the AI does for you is a task you do not learn. Five studies.
Updated November 9, 2026Cognitive offloading.
Notes, photos, maps and search. What four studies found about the things we let a tool remember, and when it is the right choice.
Updated November 10, 2026