Automatic Control, Robotics and Vision

Not so many years ago this was a mistake that brain scientists actually made: they succumbed all too often to the temptation to treat vision as if it were television — as if it were simply a matter of getting "the picture" from the eyes to the screen somewhere in the middle where it could be handsomely reproduced so that the phenomena of appreciation and analysis could then get underway. Today we realize that the analysis — the whatever you want to call it that composes, in the end, all the visual understanding — begins right away, on the retina; if you postpone consideration of it, you misdescribe how vision works.

There's nothing you can know that isn't known
Nothing you can see that isn't shown
There's nowhere you can be that isn't where you're meant to be
It's easy

Then purg'd with euphrasy and rue
The visual nerve, for he had much to see.