We are allowing tech companies to pump harmful content directly into young people’s developing brains, 24 hours a day – and it has to stop, says Esther Ghey W hen people first started warning about cigarettes, they were dismissed as alarmists. Smoking was normalised. It was everywhere, in places we would be shocked at now, such as hospitals and on planes. Companies made fortunes while children became addicted, and society dealt with the consequences decades later: cancer, heart disease, broken