Yes, those tables really are exactly the same. Don't believe it? Blame your brain. Perception has less to do with our vision and more to do with what our brain does with visual information. The two tables in this image are exactly the same size, but our brains do not immediately understand that. Our brains get tripped up based on the positioning of the tables and their legs. Our perceptive set helps our brains quickly jump to conclusions in order to save us cognitive time.