The shape of Latin S arises from Greek Σ by dropping a single out with the 4 strokes of that letter. The (angular) S-form composed of three strokes existed like a variant on the four-stroke letter Σ previously from the epigraphy of Western Greek alphabets, as well as a few https://reidzrgwk.timeblog.net/67191163/s-no-further-a-mystery