. . . . "mitted or made mandatory by new technology in ropemaking and extension to the public at large of activities such as caving and climbing.I would find interesting post on about caving knot so and so...Fairlead aka gordon5463I cannot suscribe wholehearthedly to your point of view, I beg to differ, respectfully ( the begging & the differing).But I will say with French philosopher Voltaire I am not" .