You made up your own sentence, which is not true. It's always plural, it's always parts that rule over their collective-self entity. The Earth's moon does not have the total rule of what solar system does, it's just a part of it, it's all the planets and moons in symbiosis that rule or define what solar system does. Just like electrons and protons rule or define what atoms do, and so atoms rule or define what molecules do, and so molecules define what cells do, and so on to societies, ecosystems, planets and galaxies. It's about a "clock" (atoms/molecules/cells) made of many different cogs, wheels and gears spinning around according to laws of physics, and we are musing about the possibility this clock could actually rule over its cogs and truly be the master of its own destiny. The question is whether there can exist "free will" or not.