Comment by Skarey on How to Convince Me That 2 + 2 = 3 · 2011-02-19T11:21:55.723Z · LW · GW

There is an example that often floats around, where it is 'proven' mathematically that 1=2 (or some other such equality, by the principle of explosion it doesn't really matter). The trick is that at some step in the proof, a non obvious division by zero occurred.

Comment by Skarey on Social Necessity of Drinking · 2011-02-18T11:40:04.574Z · LW · GW

Most bars I know have bottles of non-alcoholic beers. If you find out the brand name of those beverages before you go out, you could order them by name. Most people won't even notice what you're drinking.