The Terrible Unnatural Institution Of Slavery

We tend to think of slavery as one of the worst things to have developed in our society. We believe that one man's enslavement by another man is one of the most despicable acts of humanity. The institution of slavery has been called a lot of nasty names, and rightfully so. However, until now, I had always thought that it was a pure human invention: unnatural in every way.
Dawkins says, however, that a certain species of ants tend to have slaves. "Soldier" ants from a strong colony go to a weaker one and steal the developing eggs. When the eggs are born in the strong colony, they have no idea that it actually isn't their home, and they become the worker ants of that colony.
This really isn't a good way to compare slavery because our definition of it is very different. First of all, ants aren't conscious, so they don't know that they have been enslaved. Secondly, it's not as if there is money to pay the worker ants, it is just a part of their "society." Also, ants have no way of understanding morality and it isn't feasible to them that they are doing anything wrong.
Chapter 10 has been one of my favorite chapters so far. It explains in detail a lot of the features of animal altruism and how cheating can evolve. I especially like his example of Suckers, Cheats, and Grudgers. I find it fascinating how this ESS thing works.