Venkatesh Rao@vgrBrian does it again. Explains a physics thing I never thought I would truly get with a really evocative explanationQuote TweetRibbonfarm@ribbonfarm·Dec 10, 2015New post by @gravity_levity Field Theory of Swords http://ribbonfarm.com/2015/12/10/field-theory-of-swords/…6:38 PM · Dec 10, 20158 Likes