Evolutionary Complexity Quotes

The brain was designed by evolution, so each part of it is optimized for what it does, and it's incredibly, incredibly complex.

It's the old idea that the process of evolution is some push in the direction of greater complexity--in particular greater intellectual complexity. In one twig of the tree of life, namely ours, having a big brain happened to have advantages. But that's just what worked for a particular species of primate 5 to 7 million years ago.

To produce a really good biological theory one must try to see through the clutter produced by evolution to the basic mechanisms lying beneath them, realizing that they are likely to be overlaid by other, secondary mechanisms. What seems to physicists to be a hopelessly complicated process may have been what nature found simplest, because nature could only build on what was already there.

What WE represent is the nexus of concrescent novelty that has been moving itself together, complexifying itself, folding itself in upon itself for billions and billions of years. There is, so far as we know, nothing more advanced than what is sitting behind your eyes. The human neocortex is the most densely ramified complexified structure in the known universe.

Life shows no trend to complexity in the usual sense-only an asymmetrical expansion of diversity around a starting point constrained to be simple.

Perhaps, you know, new laws, new domains of potential openness are occurring as the universe ages, and complexity previously disallowed is now possible, and we are that complexity. We are nature moving out of its genetic phase - a phase under the control of chemical genes, which are physical structures, in to an epigenetic phase, a phase of culture ruled by codes, transformable culturally confined codes - mathematics, religion, philosophy, art, dance, humor.

Evolving life must experience a vast range of possibilities, based on environmental histories so unpredictable that no realized route - the pathway to consciousness in the form of Homo sapiens or Little Green Men, for example - can be construed as a highway to heaven, but must be viewed as a tortuous track rutted with uncountable obstacles and festooned with innumerable alternative branches. Any reasonably precise repetition of our earthly route on another planet therefore becomes wildly improbable even in a trillion cases.

Each step is not too improbable for us to countenance, but when you add them up cumulatively over millions of years, you get these monsters of improbability, like the human brain and the rain forest. It should warn us against ever again assuming that because something is complicated, God must have done it.

A complex society is not necessarily more advanced than a simple one; it has just adapted to conditions in a more complicated way.

In the abstract, it might be tempting to imagine that irreducible complexity simply requires multiple simultaneous mutations - that evolution might be far chancier than we thought, but still possible. Such an appeal to brute luck can never be refuted... Luck is metaphysical speculation; scientific explanations invoke causes.

The vulgarization of Darwinism that sees the "struggle for existence" as nothing but the competition for some environmental resource in short supply ignores the large body of evidence about the actual complexity of the relationship between organisms and their resources.

He always reminded us that every atom in our bodies was once part of a distant star that had exploded. He talked about how evolution moves from simplicity toward complexity, and how human intelligence is the highest known expression of evolution. I remember him telling me that a frog's brain is much more complex than a star. He saw human consciousness as the first neuron of the universe coming to life and awareness. A spark in the darkness, waiting to spread to fire.