Agreed rough math there doesn't seem right. Also, I wonder if there's an added benefit from the inverse square law here: https://en.wikipedia.org/wiki/Inverse-

Agreed rough math there doesn't seem right. Also, I wonder if there's an added benefit from the inverse square law here: https://en.wikipedia.org/wiki/Inverse-square_law https://en.wikipedia.org/wiki/Inverse-square_law