Today the idea of the knife has been taken and specialized into many areas. You have cooking knives, hunting knives, survival knives, novelty knives (such as items from a show like Star Trek or some other genre) and much more. There are knife enthusiasts out there who will find this a fulfilling hobby because of the many variations of pieces available.
Particularly the subject of interest here are survival knives. What makes a survival knife? Generally the term suggests something that helps you survive or live out in the wild in case you get lost. Although at first that makes sense, with further thinking it is hard to "imagine" other than a sharp blade what you could need to survive. But there is very much.
Survival knives are multi-faceted and often have multiple functions. Other than just being able to defend yourself or cut up materials for building - they can open canned food or start a fire with a mirror-surface. These other types of functions are what make survival knives different than just a blade you can get at WalMart.
