Why do some things cost more than others?
The Price Tag Mystery
Why do some things cost more than others?
You walk into a store and see two water bottles side by side. One costs two dollars. The other costs twenty. They hold the same amount of water. What's going on? Why does one thing cost way more than another?
Let's start with the most obvious reason: some things are harder to make. A pencil is wood, graphite, and a metal band — materials you can find in huge quantities, shaped by fast machines. A diamond ring starts as carbon squeezed deep underground for millions of years, then carefully cut by an expert. More work, more time, higher price.
