This is cool! Why didn't I stumble upon that earlier?

Actually, I think a decent goal for one who wants to thoroughly learn rationality from the Sequences would be to write several different summaries for each article. For example, it could be 3 summaries per article:

• One sentence summary (must be extremely short and concise)
• One paragraph summary
• A summary that condenses the content as much as possible but doesn't lose it

There could also be different techniques of summarizing, e.g. summarizing every paragraph of an original text into a short sentence. Another idea would be to rewrite every article from scratch using own words (this might be too time consuming). Another idea is to summarize multiple articles over the same content “arc” (not necessarily corresponding to a Sequence).

I don't know how cost-effective any of these ideas are.