There’s an old saying: “If you don’t know a knot, tie a lot.” It’s funny advice, really. Outdoor sports enthusiasts should know lots of knots, but we should know how to tie them correctly every time.

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GATEWAY — Karl Prusik is an undeniable genius. The Austrian mountaineer is credited with creating the brilliant friction hitch “knot” of the same name. And without it, we might still be camped out ...