Ask Ariely: On Disappearing Socks, Grandparents with an Agenda, and Arming Teachers

Here’s my Q&A column from the WSJ this week — and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com. ______________________________________________________ Dear Dan, I have a question that has…