There is a phenomenon that often occurs when a few guys get together to do some chore. One of them will get an idea that on the surface seems ingenious and save labor and everyone jumps on it because of its novelty. As they try to implement the idea, it becomes clear that the novel way of doing things involves much more work than the straightforward one. But once guys are committed to the idea, they will overlook all such problems and stick with the original plan.
I suspect that this is one such case, where two guys were confronted with the task of carrying a couch down two flights of stairs and figured that there was an ‘easier’ way.