Inanimate objects can be classified scientifically into three major categories: those that don't work, those that break down and those that get lost. The goal of all inanimate objects is to resist man and ultimately to defeat him, and the three major classifications are based on the method each object uses to achieve its purpose. As a general rule, any object capable of breaking down at the moment when it is most needed will do so.
[In science any model depends on a pre-chosen taxonomy] a set of classifications into which we divide the enormous complexity of the real world... Land, labor, and capital are extremely heterogeneous aggregates, not much better than earth, air, fire, and water.kenneth boulding
We must recognize that beneath the superficial classifications of sex and race the same potentialities exist, recurring generation after generation, only to perish because society has no place for them.Margaret Mead
Biological classifications have two major objectives: to serve as a basis of biological generalizations in all sort of comparative studies and to serve as a key to an information storage system... Is the classification that is soundest as a basis of generalizations also most convenient for information retrieval? This, indeed, seems to have been true in most cases I have encountered.
Crude classifications and false generalizations are the curse of organized life.George Bernard Shaw