Assuming that violent crime is proportional to the average stress in a population, the following graph shows the relationship between the violent crime rate (with an average lifespan of 77 years) and lifetime average stress, adjusted power, murder crime rate, and total distance traveled:

With these relationships, we can see how average stress, adjusted power, and distance have varied over history:

 

---

For more discussion, see the related blog entries starting with "Security."

For detailed calculations, see the Security spreadsheet.