Peirce's trichotomous classification placed Sciences of.    From Wordnik.com.  [Dictionary of the History of Ideas] Reference

Nations (1776), introduced a new trichotomous scheme referring to economic functions.    From Wordnik.com.  [CLASS] Reference

This trichotomous view of humans ie people are souls with legs on is common to all Creationists whether OE or YE.    From Wordnik.com.  [Neanderthal/human interbreeding - the old-earth response - The Panda's Thumb] Reference

For Marx, a dichotomous scheme is still dominant, and the trichotomous division is seen as a deviation which is “by its very nature” only tem - porary.    From Wordnik.com.  [CLASS] Reference

For Marx, in contrast, and though he also at times used the trichotomous scheme of the political economists, the two fundamentally opposed classes are the basic classes; the middle class is less enduring and less stable.    From Wordnik.com.  [CLASS] Reference

Perhaps the best known of all trichotomous con - ceptualizations of class structure is the one Aristotle described in his Politics (Book IV, Ch. XI, 1295b): “In every city the people are divided into three sorts; the very rich, the very poor, and those who are between them.”.    From Wordnik.com.  [CLASS] Reference