Of course you can, and probably should, change this new rules sometimes too, otherwise it’s not Calvinball. :-)

I would prefer to define as understanding what you call truth. Truth is a concept too big. It is totalitarian. The truth is what a lot of people think to own, religious, politicians and so on. Truth is static, it can’t grow and change. Understanding is dynamic in it’s nature. I get that the way you use the word truth is not the same as in “the truth”, but anyway I still prefer to change truth with understanding.