Human brain, Internet, and cosmology: similar laws at work?

The structure of the universe and the laws that govern its growth may be  similar to the structure and growth of the human brain and other complex networks, such as the Internet or a social network of trust relationships between people.
So says Dmitri Krioukov, co-author of an open access paper published by the Cooperative Association for Internet Data Analysis (CAIDA), based at the San Diego Supercomputer Center (SDSC) at the University of California, San Diego.
The paper shows that the causal network representing the large-scale structure of spacetime in our accelerating universe is a power-law graph with strong clustering, similar to many complex networks such as the Internet, social, or biological networks.