Venkatesh Rao@vgrHuman civilization tech at the extreme margins is basically alien. This for instance is Klingon tech.Quote TweetBrendΞn Mulligan | PREMINT@mulligan·Oct 14, 2017Incredible photos of the 747 supertanker dropping fire retardant on the #SonomaFiresShow this thread4:45 AM · Oct 14, 20174 Retweets15 Likes