. . . the membership relation for sets can often be replaced by the composition operation for functions. This leads to an alternative foundation for Mathematics upon categories -- specifically, on the category of all functions. Now much of Mathematics is dynamic, in that it deals with morphisms of an object into another object of the same kind. Such morphisms (like functions) form categories, and so the approach via categories fits well with the objective of organizing and understanding Mathematics. That, in truth, should be the goal of a proper philosophy of Mathematics.
Saunders Mac Lane
Any number of celebrities are dogged by "gay rumors" because we cannot quite place them into a given category. We act like placing these people in categories will have some impact on our lives, or that creating these categories is our responsibility, when, most of the time, such taxonomy won't change anything at all.
I've got categories of jobs, and one of the categories is 'money jobs.' If one of those comes along and I have to make a living, even if I don't like the script that much, I'll do it and just try to stay above water, which I'm able to do most of the time. I try not to sink with the ship.
The language of categories is affectionately known as "abstract nonsense, " so named by Norman Steenrod. This term is essentially accurate and not necessarily derogatory: categories refer to "nonsense" in the sense that they are all about the "structure, " and not about the "meaning, " of what they represent.
Some social scientists say that in-group/out-group biases are hard-wired into the human brain. Even without overt prejudice, it is cognitively convenient for people to sort items into categories and respond based on what is usually associated with those categories: a form of statistical discrimination, playing the odds.
Rosabeth Moss Kanter
Concerned to reconstruct past ideas, historians must approach the generation that held them as the anthropologist approaches an alien culture. They must, that is, be prepared at the start to find that natives speak a different language and map experience into different categories from those they themselves bring from home. And they must take as their object the discovery of those categories and the assimilation of the corresponding language.
Bound to seek recognition of its own existence in categories, terms, and names that are not of its own making, the subject seeks the sign of its own existence outside itself, in a discourse that is at once dominant and indifferent. Social categories signify subordination and existence at once. In other words, within subjection the price of existence is subordination.
Zen is the enemy of analysis, the friend of intuition. The Zen artist understands the ends of his art intuitively, and the last thing he would do is create categories; the avowed purpose of Zen is to eliminate categories! The true Zen-man holds to the old Taoist proverb,Those who know do not speak. Those who speak do not know.
All of our descriptive statements move within an often invisible network of value-categories, and indeed without such categories we would have nothing to say to each other at all. It is not just as though we have something called factual knowledge which may then be distorted by particular interests and judgements, although this is certainly possible; it is also that without particular interests we would have no knowledge at all, because we would not see the point of bothering to get to know anything. Interests are constitutive of our knowledge, not merely prejudices which imperil it. The claim that knowledge should be 'value-free' is itself a value-judgement.
The analogy between the mind and a computer fails for many reasons. The brain is constructed by principles that assure diversity and degeneracy. Unlike a computer, it has no replicative memory. It is historical and value driven. It forms categories by internal criteria and by constraints acting at many scales, not by means of a syntactically constructed program. The world with which the brain interacts is not unequivocally made up of classical categories.
Given that most movies are bad, and that there are whole categories and sub-categories of badness - the sequel, the Madonna Movie, the Friday 13th Series, or Movies Starring John Travolta Before Pulp Fiction - it is almost impossible to choose a single film for worst movie of all time. But strangely, I do have a nomination and I believe it is actually the worst movie ever made. It is Boxing Helena. The director is David Lynch's daughter, and the film comes with the almost insane-making faults that the family connection might imply.
DSM-5 is not 'the bible of psychiatry' but a practical manual for everyday work. Psychiatric diagnosis is primarily a way of communicating. That function is essential but pragmatic-categories of illness can be useful without necessarily being 'true.' The DSM system is a rough-and-ready classification that brings some degree of order to chaos. It describes categories of disorder that are poorly understood and that will be replaced with time. Moreover, current diagnoses are syndromes that mask the presence of true diseases. They are symptomatic variants of broader processes or arbitrary cut-off points on a continuum.
Males do not represent two discrete populations, heterosexual and homosexual. The world is not to be divided into sheeps and goats. Not all things are black nor all things white. It is a fundamental of taxonomy that nature rarely deals with discrete categories. Only the human mind invents categories and tries to force facts into separated pigeon-holes. The living world is a continuum in each and every one of its aspects. The sooner we learn this concerning human sexual behavior, the sooner we shall reach a sound understanding of the realities of sex.
Being nearly four years old, she was certainly a child: and children are human (if one allows the term "human" a wide sense): but she had not altogether ceased to be a baby: and babies are of course not human-they are animals, and have a very ancient and ramified culture, as cats have, and fishes, and even snakes: the same in kind as these, but much more complicated and vivid, since babies are, after all, one of the most developed species of the lower vertebrates. In short, babies have minds which work in terms and categories of their own which cannot be translated into the terms and categories of the human mind. It is true that they look human-but not so human, to be quite fair, as many monkeys. Subconsciously, too, every one recognizes they are animals-why else do people always laugh when a baby does some action resembling the human, as they would at a praying mantis? If the baby was only a less-developed man, there would be nothing funny in it, surely.