"The Matterhorn's summit ridge is not quite what excited journalists like to call "a knife-edge ridge." Our boot prints in the snow along the actual ridge prove this. Had it been a knife-edge ridge, with snow, our boot prints would have been on both sides, since the smart way to traverse a true knife edge is to hobble slowly along like a ruptured duck, one leg on the west side of the narrow summit ridge, one on the east. A slip then will lead to bruised testicles but not--God and fate willing--a 4,000-foot fall."