I’m ready to risk some potential embarrassment and admit my ignorance outright: I don’t understand the word “meme” — at all. I have seen the word used quite frequently (including by some TC contributors) and have read several definitions. But I just don’t get it. My hope is that some of our more erudite readers and contributors can explain it to me.

Here’s what I’ve been able to pick up so far:
-It is a widely repeated or imitated cultural idea, image, or practice.
-It supposedly acts in a manner similar to a gene, in the sense that through vast repetitions, more environmentally “fit” versions of the meme gain greater sticking power.
-With reference to the Internet, it often just means “fad.”

Some questions I have:
-Aren’t we just talking about the social reproduction of culture here — something that happens in everyday socialization?
-What is the unit of a “meme?” How does one delineate the parameters of a “meme” within a sea of culture?
-What on earth would make us think that culture is evolutionary, rather than just constantly changing without particular order?
-Isn’t the word “meme” just an attempt to make discussions of culture sound more sciencey?