YOU TO THINK ABOUT ILLUSION AS A METAPHOR VISION IS ONE OF THE BEST THINGS WE DO WE HAVE A HUGE PART OF OUR BRAIN DEDICATED TO VISION BIGGER THAN DEDICATED TO ANYTHING ELSE WE USE OUR VISION MORE HOURS OF THE DAY THAN ANYTHING ELSE WE'RE EVOLUTIONARILY DESIGNED TO USE VISION AND IF WE HAVE THESE