Free courses
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Some we wrote to get the shelf started; the rest were built by someone for their own question, then shared. Read any of them free, no account needed.
Courses
5 steps · 55 min · read by 1 · by Cognosc
Major vs minor: why some music sounds happy and some sad
Free to read. Add it to your courses and Cognosc checks you as you go.
5 steps · 62 min · read by 1 · by Cognosc
Why compound growth is bigger than it looks
Free to read. Add it to your courses and Cognosc checks you as you go.
5 steps · 60 min · read by 1 · by Cognosc
Average vs median: when the average misleads you
Free to read. Add it to your courses and Cognosc checks you as you go.
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A subject, an exam, a topic or a question — Cognosc builds the course around what you already know.