Carry two ignition sources, yes, but not two identical failures waiting to happen. Designers pair different mechanisms—ferro rods with piezos, ladder locks with camming buckles—so a single weakness cannot domino. The art is calculating probabilities while remembering you will be sleep-deprived and hurried.
If you must remove mitts to adjust a collar, design has already failed you. Oversized pulls, tactile coding, and generous tolerances keep blood in fingers and decisions simple. Field notes show reduced fiddling correlates directly with warmer cores and better route-finding under pressure.
Shakedowns start where phone signal fades. Packs are weighed wet and dry, straps are twisted with gloved torque, and buckles are slammed against frozen rocks. Only when hardware keeps working after repeated abuse do we consider it worthy of sunrise miles on brittle ridgelines.
During a storm on a narrow saddle, one tester’s shelter guyline slipped through a brand-new clamp. They fixed it with a backup knot and finished the night, but the logbook screamed. The redesign added serrations and doubled wrap angle, preventing repeats.
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