The "battle" for Pluto is an interesting case study in indoctrination. A few generations of children grew up being taught a specific fact, saw it in textbooks, learned mnemonics about it, had memorable cartoon characters named after it, and then one day they were told – with sound reasoning and plenty of scientific evidence – that they should now update their views on the topic.

You would think this group of well educated, critically thinking adults would go "sure", but something fundamental in their brains just refuses to let them accept this meaningless change to their lives.

Now scale this up to actual impactful topics like religion, politics, relationships, race and more and most conflicts around the world start to make sense.