3 Knives That Changed The World

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Of all of humankind's early inventions there are few that are still commonplace in the modern home. The fan assisted oven has replaced fire and I doubt any of us would even recognise a racloir. There is, however, one invention of the Palaeolithic that nearly every person in the world has in their home right now: The Knife.
The sheer genius underlying the knife design is proven by the diversity of its forms; there is a knife for every occasion. Slicing, skinning, stabbing, all these needs have produced knifes with their own unique morphology.
(thanks Danny)The Presurfer