the lesson is honesty. one doesn't need to start with all the specific information for transient political/historical etc. events x, y and z, (with the internetz even large memory-holes can be gradually filled), one just needs the honesty to question temporal authorities and not to judge a matter until one has learned the extent of one's own ignorance, instead of coping and sneeding about the unknown or unknowable. that this does not go without saying in this day and age is the moral deficiency of modern society.
Germany