thanks for looking out. I too have seen first hand what happens when people fall. The reason people fall is almost always human error. Things like two point chairs and and safety lines not installed properly, mixed with overconfidence can be disaterous. In over 15 years of high rise work myself I believe rope work is safest. Ever seen metal cable snap from the inside where no amount of inspection would have detected it, scary stuff. In nyc thats what you get though. Safety is the top priority with all my guys.