Basically, your brain suppresses information that comes along the optic nerve whenever the eye makes a saccade. The camera and the optic nerve both register everything that happens within their field of sensitivity, so, when you watch the “shaky-cam” footage, you will see the image streaking when the camera moves. Your own vision also streaks whenever your eye makes a saccade, but your brain interrupts the signal to prevent the streak from registering. This is why you are able to look around, to focus now on this object, now on that, without becoming queasy or disoriented. Try it. Look around. You should notice a blip in your vision whenever you transfer your attention from one thing to another; the blip is more pronounced as the movement of the eye becomes greater. Go ahead, look at my hand, and now look over there, at the faucet. You see? You probably noticed a bit of a streak, but did you see how it cut off almost the moment it started? The way the streak didn’t carry all the way over from my hand to the faucet? Your vision started to streak, but then suddenly you were looking at the sink, I mean the faucet, and you can’t recall or visualize clearly what your eye saw on the way from the one object to the other. That’s saccadic blindness. Your brain is actively suppressing what your eye sees when it moves. If it didn’t, you would be as afflicted by simply looking around your environment as you are watching a “shaky-cam” film; “shaky-cam” would be your entire life. Just as it is mine.