Why Do Paintings Last for Centuries — and Sometimes Just Seconds?

Some paintings last a long time, and others fall apart really fast. It all depends on the materials used to make them, like paint, canvas, or even the type of wall they're hung on. If the right stuff is used, it can survive for hundreds of years. But if the wrong stuff is used, the painting might start falling apart in just a few years. It’s kind of like how some toys last forever and others break after one drop.