As categories they are also explosive.
We wrestle with reductive definitions that encourage us to think of people as categories rather than unique human beings.
Psychological faculties, used as categories, no doubt influenced the study of so-called mental factors.
As categories go, "mammal" is an improvement over "quadruped," especially if you're thinking about what we have in common with whales.
If the concept of war crimes is ever to mean anything, it will have to be defined as categories of acts, regardless of alleged provocation.
As categories for cutting-edge terminology, in and out are as archaic as U and Non-U, as behind the times as avant-garde.
"They chose a model in which all psychiatric illnesses were represented as categories discontinuous with 'normal.' But this is totally wrong in a way they couldn't have imagined.
And as sensationally profitable as categories like cosmetics and accessories can be, most luxury houses have at least one other blockbuster that is a deep, proficient well of cash.
The categories Grp and Set are certainly not isomorphic, as categories, to one another.
