Over the course of a normal day you make hundreds, even thousands, of decisions. What shoes to wear, what news to pay attention to, what time to go to bed ... you get the idea.
Although some of these decisions are guided by logic, the direction we end up going can just as easily be shaped by a powerful force called cognitive bias. It's the tendency we humans all have to sometimes leave logic and objective reasoning at the door and make choices based on ideas that don't necessarily make a ton of sense.
“Everyone is entitled to his own opinion, but not to his own facts.” – Daniel Patrick Moynihan