In reply to UKC Gear:
The biggest-ever advance in climbing safety was the invention of nylon ropes in the late 1930s and their adoption by climbers immediately after WW2. Ordinary hawser-laid nylon rope was dynamic and withstood endless numbers of falls. I've taken and held many of them. Edelrid invented kernmantel ropes, which were simply nylon ropes with a different construction. Yes, they're nicer to use and their properties can be tweaked by varying the construction, but it's a bit rich for them to imply, as the article seems to, that they're solely responsible for the great change which had already taken place.