Looks like were approaching this from two related but fundamentally different aspects. I'm referring to human psychology in belief systems which doesn't change, appears your referring to material progress which changes all the time and is easily accepted by most.Individuals indeed can be quite passionate, even stubborn or unbending in defending the point of view they have chosen whatever their motives. Some so desperately do not want to be wrong or have motive to push a concept or idea, they will ignore, resist or attack even the best, most logical and accurate arguments. The individual can plant the idea or discover the concept, but overall, society has to choose what it will accept as the norm.
Humankind has demonstrated over millennia that it not only can but does change. Each new religion brings its own customs, rules, laws. From a world of monarchal, imperial, totalitarian rule the USA was formed and forever changed opinions of what government must/should be for millions. Most of the world was able to give up draconian medical practices in favor of more scientific ones, switched from horse and buggy and sailing ships to mechanical transportation, etc.
I'm just saying that I think our knowledge and technology is still in its infancy compared to what there is still for us as a species to know and learn.