>> If you pay attention to cats, you figure out they are fuzzy little “difference engines.” > That must be a mechanism in the brain rather than the eye Check

>> If you pay attention to cats, you figure out they are fuzzy little “difference engines.” > That must be a mechanism in the brain rather than the eye Check out "A Thousand Brains: A New Theory of Intelligence" [1] by Jeff Hawkins [2], of PalmPilot fame. This theory postulates, in part, and with evidence, that brains are continuously comparing sensory input and movement context with learned models. I found the book to be mind-blowing, so to speak ... [1] https://www.amazon.com/Thousand-Brains-New-Theory-Intelligence/dp/1541675797/ https://www.amazon.com/Thousand-Brains-New-Theory-Intelligen... [2] https://en.wikipedia.org/wiki/Jeff_Hawkins https://en.wikipedia.org/wiki/Jeff_Hawkins