Sunday, August 2, 2009

The Third Replicator

Writer and psychologist Susan Blackmore has an interesting article at New Scientist on the emergence of what she thinks is a third type of "replicator." The first type is the gene, the parcels of DNA that code for the structure and function of biological organisms. The second type is Richard Dawkins' "meme," which is an idea, or cluster of ideas, that get selected by cultures for various reasons and spread throughout the human population (We might ignore for the moment the fact that the concept of the meme has come to be widely dismissed by scientists).

Blackmore thinks there is a third type of replicator that is spreading across the globe threatening to run out of control - computer technology. She makes an interesting case and her article is worth a read, but the most interesting part of it to me is this:

Memes are a new kind of information - behaviours rather than DNA - copied by a new kind of machinery - brains rather than chemicals inside cells. This is a new evolutionary process because all of the three critical stages - copying, varying and selection - are done by those brains. So does the same apply to new technology? There is a new kind of information: electronically processed binary information rather than memes. There is also a new kind of copying machinery: computers and servers rather than brains.

If all three replicators are analogous to each other, and all three are expressions of information, and if information is known to be a product of minds, as it is with memes and technology, then is it not reasonable to infer that the gene may likewise be a product of mind? If evolution at the level of the meme and technological information is mind-driven, why would it be unreasonable or even unscientific to assume that evolution at the level of the gene is mind-driven? Just asking.

RLC