Most people have quite the wrong idea about what open-mindedness is. I’ve been told by people who believe in things that are not well supported by evidence, that I am closed-minded for not believing in them. Ghosts, for example, or the existence of a soul. Am I closed-minded because I hold back on accepting things until I have seen sufficient evidence? I don’t think so. I am definitely open-minded, but that does not mean I accept anything without judgement or consideration. A better word for that is gullible. I often find too, that people who tend to believe in supernatural kinds of things are immediately dismissive of scientific kinds of things. Which, to me, suggests that either they are (a) accepting towards things they want to believe, and closed-minded against things they don’t, or (b) have their own standards for determining what they will accept and what they won’t, which are different from my own (in which case, by their own reasoning, they are closed-minded too).
Unfortunately, people aren’t taught how to think, how to evaluate claims and evidence. Which is a shame, since it seems to me that people adopt their opinions and beliefs from newspapers and other media, which are the places where critical thinking is most needed!
Below is an excellent video on open-mindedness I found on YouTube. Give it a watch, it really explains things well.