Adding a bit of information theory, we can see some interesting things in memes.
I like considering religion as meme. Because it has some amazing properties.
Conversions are attempt to spread.
Any rulings against converting to another, are intended to block losing hosts.
Jewish religion has rules on kosher food.
What's remarkable, is that food made this way is easier to store.
It takes a bit longer to go bad, which was very important in times before refrigeration.
Rules on holy days prevent overworking.
If prayers rhyme it's a built in error correction.