This atypical friction knot in the brake and B lines formed spontaneously when the glider was unpacked and made ready to fly. If the pilot had launched with this knot in place it would have presented a lethal crisis that could not be fixed by any means if the glider had been launched. Performing a pre-flight is extremely important and lowers the risk of our sport by 50% or more. Pilots must practice examining the upper cascade glider lines every time they setup to fly. Reverse inflations allow us to build a wall in order to examine the lines as well take a close look when the glider is brought up overhead. Only when everything looks perfect, should a pilot turn and go. But if you are not an expert kiter, how will you examine the glider when it is in the air before you launch?