Put a hundred toddlers on an island. Leave a few older children that will disappear a few years later that are taught to fish/hunt/gather. See what kind of language develops, or what kind of civilization. How many survive?
It is VERY unethical. Add variables to other islands, such as the amount of children, and what you teach them.
Could be paying an arm and a leg. He already paid with his leg, doesn't realize that the arms next. Also why he's still optimistic. Doesn't realize that the worst of it hasn't even happened yet. (Also the artist might have just not known how to draw him chained up like the rest with just one arm)