What is the writer's main purpose in the text? — To weigh up whether switching off from screens really helps, and land on a middle position
According to the supporters of a detox, what may happen if a person switches off for long enough? — Their concentration returns and their mood lifts
Why do the sceptics argue that a detox "treats the symptom rather than the cause"? — Because the deeper problem is the design of the products, not the individual's willpower
