
It would be like trying to take a sip of water from a firehose. The process that takes about a tenth of a second but your eyes receive a constant stream of light, an incredible amount of information, so it’s really difficult for your brain to try to focus on everything at once.

When you look at something, what you’re really seeing is the light that bounced off of it and entered your eye, which converts the light into electrical impulses that your brain can turn into an image you can use. Your brain can morph a mere pair of identical lines in all sorts of ways, as illustrated by these optical illusions: the Ponzo illusion (1), the Chub illusion (2), the Muller Lyer illusion (3), and the Café Wall illusion (4).
