That sounds like the Levenger Circa system. I never tried them myself (thought t... | Hacker News

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		tedmiston on Sept 23, 2016 \| parent \| context \| favorite \| on: Ask HN: What do you guys use to help organize dail... That sounds like the Levenger Circa system. I never tried them myself (thought they were too pricy), but they are popular in the GTD crowd. http://www.levenger.com/circa-notebooks-339.aspx I did Hipster PDA for a while, which you could kind of consider a poor man's version. http://www.43folders.com/2004/09/03/introducing-the-hipster-...

Jtsummers on Sept 23, 2016 [–]

The Circa notebooks were my introduction to the concept. Arc is cheaper by a good bit. The rings are slightly different but paper from one will work on the other, maybe not perfectly but functionally.

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