In this case, the quality of your intellect and how well educated you are—absolutely do not matter. How many years did you spend getting an education in those areas, in which you are now a professional? Probably it was not a few days, weeks, months, and possibly not just a couple of years? Then why are you surprised that you do not have the knowledge and skills that developers of the Catalog of Human Population acquired for decades (this research began in 1975)?