But the rope is different, even though it may have worked for the same reason as those other things. If the rope just untied it's self that would be a sight to see. We know what the Phial looked like and can imagine what the boat looked like, but no telling what this rope looked like in action. I am not sure that one could have observed it untie it's self, but I wonder what other people think. If the rope intied without the aid of anything else I think it would have looked like the rope just slipped out of the knot, as if it where slimey or something. I am still not sure of this though. When I ask how people think it worked I do not expect them to explain the magic, but to actions taken by the rope. The actions of the boat: it stayed afloat. But the rope? It does not say. It just came unconnected somehow.