For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
Also when the leap years were introduced, the priests (who were to take care of the calendar) didn’t understand what dis “every four years” mean, and used to put a leap year every three years.
deleted by creator