Importance of Categorization

In response to Krystal - full post here

Categorization is extremely important to evolution, I would say. Most animals, to my knowledge, instinctual categorize things. Most animals have to recognize and categorize accordingly, the poisonous foods from the non-poisonous foods. It was important for our evolutionary ancestors in the Lower Paleolithic period, for example, to categorize gardening tools (a stone spade) from close combat weapons (handaxes) and long-range weapons (arrows).

You could go to a book store and ask for a thing (without category), or you could ask for paper, or a book, or a science fiction novel. The last one is the most direct it says what you want. Imagine going to a book store with no method of organization/categorization trying to find a book that we recognize as science fiction.

It would be a terrible world where there was nobody bothered to distinguish a piece of iron from pure sodium (which explodes when it contacts water) or a world where people fill oxygen tanks with carbon dioxide.