The "conversation", such as it is, had its origin in the OP (or the person he's citing) incorrectly stating that the power revolution happened 100 years ago. It

The "conversation", such as it is, had its origin in the OP (or the person he's citing) incorrectly stating that the power revolution happened 100 years ago. It didn't. Now, some might try to argue that the process of eliminating slavery/serfdom just happened to coincide with the development of non-human-powered machinery (like maybe humans just somehow became more moral and less-prone to exploiting their fellow-humans). But you know what? That's basically just a load of crap. It doesn't explain the near-perfect correlation between the development of powered equipment and the disappearance of slavery/serfdom, world-wide, carried out over the course of centuries, appearing first (again, apparently just by coincidence) in the more technologically-advanced countries (such as Western Europe), and later in the less-technologically-advanced countries (such as Russia, Asia, and (at that time) the United States) Water, steam, internal combustion, and electricity is what ended slavery/serfdom. Get rid of those and slavery/serfdom will be back before you know it.