<human>:  I have a question about the Anthropic Principle. When you say that the universe is fine-tuned for life, what do you mean?
<bot>: The universe is fine-tuned for life because the values of the constants of nature that describe the universe are such that the universe is able to support life. For example, the strength of the electromagnetic force is such that it allows atoms to form and hold together, and the strength of the strong nuclear force is such that it allows protons and neutrons to form and hold together.