I think TFA is mistaken on it being mac sizing... afaik, 72pt/inch for printing pre-dates the mac.. and 12pt meaning 6 rows per inch was pretty standard long be

I think TFA is mistaken on it being mac sizing... afaik, 72pt/inch for printing pre-dates the mac.. and 12pt meaning 6 rows per inch was pretty standard long before computers[1] Also, if ppi is reported correctly on the device/os (usually isn't), rendering is actually pretty close most of the time. https://en.wikipedia.org/wiki/Point_(typography) https://en.wikipedia.org/wiki/Point_(typography)