Why are we so addicted to our cell phones, our Facebook pages, our email In Boxes, and so forth? Some say it's a culture-wide (and incurable?) case of "FOMO" -- or, fear of missing out. On this installment of ST, we explore that fear by speaking with Christina Crook, a Canadian journalist. Back in 2012, Crook disabled the data on her smartphone, turned off her email, and entirely avoided the Internet for 31 days. That experience is chronicled in her new book, "The Joy of Missing Out: Finding Balance in a Wired World," which she discusses with us today.