[As long as the quicker method didn't involve actual, heavy physical labor, Ciel will find it acceptable.
This time, the effort in tying a knot is significantly different. Which if they really think about it, says quite a lot that Ciel puts more stock into learning how to illegally detain someone versus making sure that Sebastian stops leaking blood everywhere. Either way, he listens carefully, emulating Sebastian's moves and once he ties off the first amateur surgeon knot (loose but still functional), he forgets himself and beams at Sebastian.]