The government is weighing up whether or not to follow in Australia’s footsteps and ban social media for under-16s. Supporters argue that online safety efforts have failed and that children are being exposed to increasingly harmful content. Critics warn that a ban would isolate young people, let tech companies off the hook, and create a dangerous cliff-edge at 16.

Companies across the Big Tech sector have consistently said that protecting children is a priority, as is reducing the spread of disinformation on their platforms.

In today’s episode of The Fourcast, Cathy Newman speaks to Professor Kaitlyn Regehr, author of Smartphone Nation, and digital journalist Sophia Smith Galer, about what a ban would really achieve, whether regulation can ever keep pace with the platforms, and how algorithms amplify harm in ways that governments, and parents, struggle to control.