Venkatesh Rao@vgrProve all odd numbers are prime. Mathematician: 1, 3, 5, 7, define 9 to be prime, 11... Physicist: 1, 3, 5, 7, experimental error, 11...6:43 AM · Feb 17, 20163 Retweets10 Likes
Brian Skinner@gravity_levity·Feb 17, 2016Replying to @vgr@vgr I hate to be this obnoxious, but 1 is not a prime number.2