Nate Silver @NateSilver538
@gelliottmorris @DanRosenheck @Nate_Cohn @collprof @Michael_Cobb68 This is a sample size of 18, or whatever. You have to be very very careful about how you specify the model *especially* around the fundamentals where the number of defensible model specifications far exceeds the sample size. — PolitiTweet.org