The speed the version's paper starts at, as the copies of its own system
that bear witness to it at first hand state they were cut for: the mean
of the speeds the edition holds true or likely. A stated speed is the
speed at the beginning of the roll, as a tempo marking gives it. Nothing
where no such copy states one; in particular, a copy that reaches the
version only through a later one says nothing about it, since the later
one may have been cut for another speed.
The speed the version's paper starts at, as the copies of its own system that bear witness to it at first hand state they were cut for: the mean of the speeds the edition holds true or likely. A stated speed is the speed at the beginning of the roll, as a tempo marking gives it. Nothing where no such copy states one; in particular, a copy that reaches the version only through a later one says nothing about it, since the later one may have been cut for another speed.