Daniel Dennett - The Digital Planet 1998

Lots about memes here. The blurb reads:

Daniel Dennett describes how Darwin introduced the idea of natural selection by comparing it to the selective breeding of domestic animals; including intentional selection as well as unconscious selection. Dennett also introduces a fourth category, genetic engineering. He then goes on to show how these categories also apply to the evolution of cultures.

From a conference in 1998 called Der Digitale Planet (The Digital Planet), which also included Douglas Adams, Richard Dawkins, Jared Diamond and Steven Pinker.