What is the paleolithic?
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the paleolithic?

### Response:

The word "Paleolithic" comes from the Greek for "ancient stone." It refers to a time period of several million years in the past, from the beginning of humans to the invention of agriculture about 10 million years ago, when stone tools were made and used.