I'd urge you to go read the longish post at The Technium. He's a clear thinker and fine writer, and you'll find much to think about even if you don't buy every thesis.
Here's a taste:
It is important to remember how dumb the bottom is in essence. In biological natural selection, the prime architect is death. Death powers evolutionary selection. Death is one binary bit. Either off or on. What's dumber than that? So the hive-mind of evolution is powered by one-bit intelligence. That's why it takes millions of years to do much.
We are too much in a hurry to wait around for a pure hive mind. Our best technological systems are marked by the fact that we have introduced intelligent design into them. This is the top-down control we insert to speed and direct a system toward our goals. Every successful technological system, including Wikipedia, has design wired into it.