Sagan's kit is one of several similar resources I'd turned up ... over a decade ago now ... when I'd begun considering the matter of epistemics in media, particularly online discourse. The situation's not improved.

My catalogue is here: <https://web.archive.org/web/20200121211018/https://old.reddi...> (archive).

It includes in addition to Sagan: Rory Coker's precis on pseudoscience, the Venn Diagram of Irrational Nonsense, the concept of falsifiability, an informative (if excruciatingly painful) BBC docu on stupidity, Frankfurt's "On Bullshit", Ferguson on why youth culture made everything suck, Brandolino's Law, Silver's Bullshitter's Inequality, a relationship between the Kübler-Ross model and the Dunning-Kruger Effect, The Periodic Table of Irrational Nonsense, and Adams's 'B'-Ark.