RD-D2 knew horrifying truths about Luke Skywalker, Darth Vader, and Leia... so why the hell didn't he tell anyone? Calm is offering a special limited-time promotion of 40% off a Calm Premium subscription at http://calm.com/BIGQUESTION.

Star Wars' R2-D2 has been at the center of the Skywalker saga since the beginning, from A New Hope through the prequels, avoiding getting his memory erased in Revenge of the Sith, and playing major roles in the sequel trilogy and the Clone Wars animated series. Along the way, Artoo picked up all kinds of secrets -- dark truths the droid never divulged to ANYONE. In this episode of Big Question, Erik Voss and Tommy Bechtold examine WHAT R2-D2 knew, WHEN he knew it, and WHY he never said anything. Was Artoo trying to protect Luke by going along with Obi-Wan's lie about Darth Vader / Anakin Skywalker? Did Artoo know Luke and Leia were brother and sister? Did Anakin and Padme MAKE ARTOO WATCH?