the first one is the answer :))
It is safe when you have metal detector because it can also sensor thieves or shoplifter who wish to bring clothes outside the store. Metal detectors are useful to find hidden metal objects and can detect not just nearby but even metal objects buried underground.
Myths are stories that are written by unknown authors. The purpose of these stories is often to explain complex concepts before science or proof could explain them. They are also used to teach people morals. Myths may often be religious or attempt to explain how the world came to be.
