He argues that childhood is now phone-based instead of play-based, resulting in anxious and depressed kids. "They know that life would be better if they didn't spend five or six hours a day on social media. They know that, but they can't help it" says Haidt. But not all researcher agree. I challenge Haidt with the criticism. In our podcast, Haidt responds, and lays out his best advice to protect kids from smartphones.