An article by Joel Achenbach for National Geographic asks, “Why Do Many Reasonable People Doubt Science?“. I wondered the same thing myself. I’ve found people who adamantly refuse to believe that something has happened or existed even if the proof was presented. The article is fairly long but absolutely answers this particular vexing question.
John Oliver, a comedic newscaster, asked the same question basically in a spoof on global warming that he did on his show. His video was called “A Statistically Representative Climate Change Debate”. Watching it gives you a visual about this particular debate. I recommend you read the above article and find out exactly why humans can refuse to believe, what for them, can be hard to believe. Mr. Achenbach’s article is well written and you will be able to get through it quickly and enjoy the trip.