Climbing up bedsheet rope as knot starts slipping loose - can they make it to the top?

Hey guys, this is a slightly different kind of vid because there are no footwear involved, it's just the hands and arms this time. Just they way the filming worked out. It's real hard filming just the lower half when simulating climbing and I don't live in such a large place. We do have a hatch to an unfloored attic and that's usually the best place I can find for climbing without being noticed. I have used a walk-in closet but it's not quite the same.