I thought it was a pretty clear statement. What don't you understand? I'm happy to clarify, but I don't have enough information to address your concern
I know how functions can be scale invariant, but I don't know how behavior can be scale invariant.
I’m not exactly sure what you mean by scale invariant, but there are many ways in which history repeats itself.
Other than that I can recommend talks of Hans Rosling, who gives an entirely different picture of the world backed by data.