I want to know the answer to the following question:
How does Whitehead characterize anything that exists?
All the background I'm provided with is that "A real thing is just that which forces the rest of the universe to in some way conform to it; that is to say, if theoretically a thing made strictly no difference to any other entity (i.e. it was not related to any other entity), it could not be said to really exist.". Is that enough to answer the question?