A scuff on your bag, a dent in your mug—and suddenly it feels like time for a new one

Imagine you have a bag you really like. It felt like "the one" when you bought it. Over time, it starts to look worn. There are some scuffs on it. Nothing is actually wrong with the bag, and it still works exactly as it should. Yet, once you notice those imperfections, you start This story matters for Science & Discovery readers tracking engineering. Reported by phys.org. Read the full original at the source link below.