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The new age of information

"The new age of information" Continued...

Issue: "Darwin's meltdown," April 3, 2004

The No Free Lunch Principle led to a massive change in scientific perspective. One notable consequence for biology was a thoroughgoing reevaluation of experimental work on prebiotic and biotic evolution. Invariably, where evolutionary biologists reported interesting experimental results, it was because "intelligent investigators" had "intervened" and performed "experimental manipulations" that nature, left to its own devices, was utterly incapable of reproducing.

This led to an interesting twist. Whereas Darwinists had been relentless in disparaging intelligent design as a pseudoscience, Darwinism itself now came to be viewed as a pseudoscience. Intelligent design had been viewed as a pseudoscience because it refused to limit nature to the operation of blind material processes. Once it became clear, however, that material processes were inherently inadequate for producing biologically significant information, the Darwinian reliance, and indeed insistence, on such processes came to be viewed as itself pseudoscientific.

What would you think of a chemist who thought that all explosives were like TNT in that their explosive properties had to be explained in terms of electrostatic chemical reactions? How would such a chemist explain the explosion of a nuclear bomb? Would this chemist be acting as a scientist in requiring that nuclear explosions be explained in terms of electrostatic chemical reactions rather than in terms of fission and fusion of atomic nuclei? Obviously not.

Scientific explanations need to invoke causal powers that are adequate to account for the effects in question. By refusing to employ intelligence in understanding biologically significant information, the Darwinian biologists were essentially like this chemist, limiting themselves to causal powers that were inherently inadequate for explaining the things they were trying to explain. No wonder Darwinism is nowadays considered a pseudoscience. It does not possess, and indeed self-consciously rejects, the conceptual resources needed to explain the origin of biological information. Some historians of science are now even going so far as to call Darwinism the greatest swindle in the history of ideas. But this is perhaps too extreme.

The information-theoretic perspective did not just come to govern biology but took hold throughout the natural sciences. Physics from the time of Newton had sought to understand the physical world by positing certain fundamental entities (particles, fields, strings), specifying the general form of the equations to characterize those entities, prescribing initial and boundary conditions for those equations, and then solving them. Often, these were equations of motion that, on the basis of past states, predicted future states. Within this classical conception of physics, the holy grail was to formulate a "theory of everything"-a set of equations that could characterize the constitution and dynamics of the universe at all levels of analysis.

But with information as the fundamental entity of science, this conception of physics gave way. No longer was the physical world to be understood by identifying an underlying structure that has to obey certain equations no matter what. Instead, the world came to be seen as a nested hierarchy of systems that convey information, and the job of physical theory was to extract as much information from these systems as possible. Thus, rather than see the scientist as Procrustes, forcing nature to conform to preconceived theories, this informational approach turned the scientist into an inquirer who asks nature questions, obtains answers, but must always remain open to the possibility that nature has deeper levels of information to divulge.

Nothing of substance from the previous "mechanistic science" was lost with this informational approach. As Roy Frieden had shown, the full range of physics could be recovered within this informational approach (Physics from Fisher Information: A Unification, Cambridge University Press, 1998). The one thing that did give way, however, was the idea that physics is a bottom-up affair in which knowledge of a system's parts determines knowledge of the system as a whole. Within the informational approach, the whole was always truly greater than the sum of its parts, for the whole could communicate information that none of the parts could individually.

The primacy of information throughout the sciences has had profound consequences for religion and faith. A world in which information is not primary is a world seriously limited in what it can reveal about God. This became evident with the rise of modern science-the world it gave us revealed nothing about God except that God, if God exists at all, is a lawgiver. But with information as the primary stuff, there are no limits on what the world can in principle reveal about God. Theists of all stripes have therefore found this newfound focus of science on information refreshing.

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