…that one skein is not enough.
A kitchen balance is useful in so many ways. On this occasion it is showing me that the first of the pair has already used more than half the available yarn, as I had feared might be the case. On other occasions it demonstrates things like Little Blue Teddy being heavier than Baby Bear despite the latter having larger dimensions.
I have a choice. Unravel the item and make a pair shorter than instructed so one skein will be sufficient or get another skein and have 3/4 of it left over.
Common sense and fiscal prudence dictate the former. Love of yarn and an excuse to go back to the shop tug in the other direction.