The other strange part is the "6 days to change 1 line of code" - yes, this one line of code took six days to change. But the actual time investment of each per

The other strange part is the "6 days to change 1 line of code" - yes, this one line of code took six days to change. But the actual time investment of each person, even the programmer involved, is much less than those six days. Probably lots of other lines got changed in those days by those same people, including the author, so you're not really offering any useful velocity measurement by pointing to this one line that takes six days to change. (And presumably that's not even true if Ed touched some other lines in ORP572.)