depends on how people take the definition of slave, there are to types in the real world as far as i know, the ones that submit to the one that they would wish to serve and are only shared with others if thats whats agreed upon(this ones the legal one), or the second one the ones that are forced to serve anyone that just happens buy in hope that they find thier freedom sometime later. (illegal one), now as we all would hope that they are of the former. in this denuseri is correct, it's a process. and it's mostly done out of respect, the latter is mostly done out of fear, and in this lifeime i would drather be respected than feared.