Our eyes see millions of things each day. To process so much incoming information, our brains create shortcuts. It makes gathering information easier and quicker. But sometimes we get things wrong. What we see can be at odds with the actual reality. Scientists have discovered that it has less to do with our eyes and more to do with how the brain works.
In this optical illusion the eye has tricked our brain into thinking one arrow is longer than the other. However, in reality, both arrows are the same length.
