" You sense what's going on and do something in response. But doing something, if you are made of many cells, is not a trivial matter, not something that can simply be assumed. It takes a great deal of coordination between your parts. This is not a big deal if you are a bacterium, but if you're a larger organism, things are different. Then you face the task of generating a coherent whole-organism action from the many tiny outputs--the tiny contractions, contortions, and twitches--of your parts.

A multitude of micro-actions must be shaped into a macro-action. "

― Peter Godfrey-Smith , Other Minds: The Octopus, the Sea, and the Deep Origins of Consciousness