Homer: Aw, twenty dollars? I wanted a peanut!

Homer's Brain: Twenty dollars can buy many peanuts.

Homer: Explain how!

Homer's Brain: Money can be exchanged for goods and services.

Paul: Aw, what do I do with all this money? My purse is so small!

Mr. Cole: That money could be put to use, to gain more money.

Paul: Explain how!

Mr. Cole: Money can be exchanged for stocks and bonds. The value of these securities shifts over time. Performing analysis on these securities can help you produce probabilities on how the value may change.