CHAPTER 6 By the eighteenth century, scientists knew that every action has an equal and opposite reaction. Awareness of that fact has put the physical sciences centuries ahead of the social sciences. —Anthropos, Sanity and Society After the conference broke up, it took another two hours before the ship was ready for lift-off. The procedure itself was not nearly that involved but, again, they were shorthanded. It was normally Zhurat’s duty to check out the robots and the cargo area, making sure everything was safely stowed away. Having something even slightly out of alignment could be disastrous when the internal acceleration reached two gees; a box even slightly off center could fall, knocking over others and destroying valuable merchandise. A robot not properly in its place could fall