I first parsed the title as (Fast, Constant) Time-Sphere indexing, and thought of http://timecube.2enp.com/ http://timecube.2enp.com/. Anyway, neat article, th

I first parsed the title as (Fast, Constant) Time-Sphere indexing, and thought of http://timecube.2enp.com/ http://timecube.2enp.com/. Anyway, neat article, the interactive diagrams are very nice.