Do "we?" Given the right impetus, mass slaughter is eminently possible in the 21st century IMHO.My choice of a scenario of robots fighting over France was a little tongue in cheek, but I think it is pertinent. WW1 Generals treated soldiers as an expendable commodity with little or no regard to the human cost. Today we value life far too much to contemplate such slaughter. Not what if we substituted robots for soldiers?