The “smartphone-free childhood” debate has reached fever pitch in recent months, partly thanks to Jonathan Haidt’s new book The Anxious Generation, which talks about how childhood changed dramatically in the early 2010s when kids began getting smartphones. Haidt asserts that we’ve overprotected our children in the real world and underprotected them online. He calls for no smartphones before high school, no social media until age 16 and phone-free schools.