… Data aequatione quotcunque fluentes quantitates involvente fluxiones invenire et vice versa …
Dos and Don’ts of giving talks
by Willie Wong
(I am putting this on my blog mostly so I can find it again later.)
Jordan Ellenberg stirred up a discussion of bad practices that happens in talks. Then he decided (after a commenter) that positive reinforcement of good practices may work better.