Human technology developed from the first stone tools about two and a half million years ago. At the beginning, the rate of development was slow. Hundreds of thousands of years passed without much change. Today, new technologies are reported daily on television and in newspapers.
This paragraph best supports the statement that:
- Stone tools were not really technology.
- Stone tools were in use for two and a half million years.
- There is no way to know when stone tools first came into use.
- In today's world, new technologies are constantly being developed.
