In listening to those two retirees with nothing better to do than relive their childhood and play pranks and wait to go to BBQs (rant over), I take issue with their assessment of how to tell the difference between man- vs. supernatural-made crop circles. Specifically, they base their assessment on the flat, thin plank of wood that will, of course, cut into the stalks. I think the tools in the 'how to' link below solves that issue because the more rounded the tool there will be no cut marks in the stalk. Just a theory of mine, what do you think?
https://www.wikihow.life/Make-a-Crop-Circle
https://www.wikihow.life/Make-a-Crop-Circle
Truth fears no question. Anon