Zombies. Bigfoot, defensive and decorative value aside, large knives were and remain the rule in most places. Unfortunately, urban society and modern law prohibits most of us from discovery how useful these tools are. However, we can still notice that our home knife block still contains many larger knives; that commercial butchers, slaughter houses, and chefs have traditionally used very large knives. Until recently, people haven't been so shy with knives. Butchers had meat cleavers instead of folding knives. One peak at Stone's classic glossery of arms (A Glossary of the Construction, Decoration and Use of Arms and Armor: original published date 1920s), or any similar period catalog, will reveal photos of thousands of large knives from all around the globe throughout wide spans of time. The contrast in utility is like comparing the saw on a SAK with a proper carpenter's saw. Ease of maintenance, safety and ergonomics of use, and the abilty to make longer single cuts, and to cut materials at a greater reach and depth, tilt towards the efficiency of the fixed bladed knife over the folder, especially with larger knives. That's not to say that smaller knives are any less useful. A surgeon would do better with a scapel then a bowie. But, efficiency and quality comes from using the right tool for the job, and that tool can frequently takes the shape of a larger knife.
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