Auden: minus times minus equals plus, the reason for this we need not discuss

I stumbled upon this quote by W. H. Auden (from A Certain World: A Commonplace Book, 1970): Of course, the natural sciences are just as “humane” as letters. There are, however, two languages, the spoken verbal language of literature, and the written sign language of mathematics, which is the language of science. This puts the scientist…

Clearance price fail

Happy Monday! Here’s a funny math-related photo from yesterday’s Failblog. Where to begin with this one? There’s so much wrong with it (what’s a Sentai Fortrs?). But despite all of its problems, at least they put a negative sign next to the sale price to match the direction of the price difference! []