Mesoamerica's progenitor civilization, the Olmecs, are one of the most enigmatic civilizations of the Americas ancient past. Much like the Egyptians, the Olmecs arrive on the archaeological record as a fully formed civilization--with an understanding of numerology, written language, monumental architecture & advanced methods of polishing - not seen anywhere else in the ancient Americas at that time.
Due to the rampant book burning of thousands of Mesoamerican texts in the mid-1500s, we must use the very scant evidence & a lot of detective work to piece back together the lost knowledge from the origins of ancient Mesoamerica.