I was thinking of how human waste testifies to what they ate*, thus in principle at least, What Archeology Reveals About Fast Food and The old Chamber Pot are related, while two posts in a row on the subject of what past civilizations did, seemed incongruous, and which I remarked on as being rather humorous. Sorry for any misunderstanding. *
https://www.npr.org › sections › thesalt › 2018 › 04 › 25 › 605798840 › dna-analysis-of-ancient-excrement-reveals-the-diets-of-centuries-past DNA Analysis Of Ancient Excrement Reveals The Diets Of Centuries Past - NPR Apr 25, 2018Researchers are exhuming ancient dung from toilets of yore to reconstruct snapshots of food and lifestyle in bygone centuries. The parasites that show up in privies reveal a lot about what people ate.
https://www.smithsonianmag.com › smart-news › dna-ancient-latrines-reveal-what-people-ate-centuries-ago-180968947 DNA From Ancient Latrines Reveal What People Ate Centuries Ago DNA From Ancient Latrines Reveal What People Ate Centuries Ago By digging in ancient toilets, researchers uncovered genetic material that tells of past diets and diseases
Archaeologists do tend to get a lot of information from medieval, ancient, and prehistoric refuse -- seeds, husks, broken tools, broken pottery, bones of food animals etc. Years ago I was planting a tree and unearthed some bone fragments apparently disposed of by my great-grands. Alas, outhouse excavations tend to turn up old liniment and potent potables bottles.