We live in an age of simple answers and it is easy to believe that science has finished finding the simple rules that underlie all the complexity of the world.

Gall’s Law suggests there ought to be simple systems from which the complex realities emerged, but that doesn’t mean we’ll be able to discern them.

We clearly haven’t yet, or we’d be finished with science. Rather, we’ve only recently begun to appreciate the nuances of the human microbiome and neuroglia. Physicists don’t agree on the most basic