So biology gives culture a long leash but culture, according to Plotkin, is still on a biological leash. Here's an example from Sperber himself. In our ancient evolutionary heritage the ability to distinguish between sounds would have been reproductively advantageous. But in the Stone Age there was no Beethoven, no Bach, no Beatles, no Britney Spears. Like Plotkin, Sperber seems to believe that biology has culture on a very long leash, but on a leash nonetheless.
Memes are everywhere.
You will see additional copies of materials that you have read, or hear again and again the information that you have absorbed. Things become memes when someone imitates them, and in this world it is quite hard to find a unique anything because humans by nature imitate each other a lot. To be sure, something could be a new and original blend of existing memes, but soon even this blended something will also be copied over and over again. Memes have been adapted themselves to the new revolution of technology. But the most important medium at present is the emerging global computer network, which can transmit any type of information to practically any place on the planet, in a negligible amount of time.