GUESS WHAT? In 2016, the SAT will no longer penalize test takers a quarter of a point for a wrong answer. Walt Hickey, writing on Nate Silver's new FiveThirtyEight blog, questions the rationale for dropping the penalty. "By encouraging guessing, the College Board is introducing statistical noise to the scores," he writes. "And that means a big change in how students approach the exam." There's no reason not to guess.