Seeing the world around you!

Lets say you are sitting on a bench waiting on a bus watching, and noting the cars that pass by. Now lets say a man is sitting next to you during this whole time, as the bus finally pulls up you turn your attention to this man to only see now that he is a woman! Did this man magically turn into a woman right before your eyes? Or is it your mind playing the tricks. In chapter 4 of our text we get an opportunity to learn and discover some fascinating truths about our senses and perception. One function our brains demonstrate is a phenomena called "Unintentional bias",this is when we are unable to notice stimuli right in front of us due to our brains paying attention to someone or something else.
What and why do we choose what things we block out? Well when we notice something our brains processes different factors of what we are look at. Visual clues like color, and shape all play a apart in how and what we perceive. So things that catch your attention might be have visual cues that you are more drawn too. Many scientist are still not sure why Unintentional bias happens but hope information about it will shape ideas of perception and attention. But we can say that it is a useful phenomenon. WIthout Unintentional bias our brains would be scrambled with the attraction of stimuli everywhere.