Letter of the day Lost in screens, blind to the threats around us

I refer to the article "Fewer than 1 in 5 people noticed suspicious items during MHA's social experiments" (July 30).

- Yik Keng Yeong (Dr)

Many of us have been taught by our parents to walk away from danger, to leave any action to be taken to the authorities — it's an apathetic response that must change as public safety becomes of paramount concern.