On Killing was published in 1995, and the theories it contains have remained relevant if controversial.
theories based on scant evidence swing from mechanical problems to pilot error and back again.
The theories offered by agents, performers, and directors vary.
Hobbes lacked the data of archaeology and anthropology to inform his theories about the dangerous nature of pre-state existence.
Most of these theories seem to evolve from those of Dr. William Sears.
"Mrs. Gaynor seems to live up to her theories, at any rate," chuckled Stephen.
These theories were also in their consequences far-reaching.
Let us apply some of the other theories which are now current.
Many of his theories are no doubt impracticable and unsound.
These two theories are the basis of nearly every recommendation that can be found for the use of fertilizers in growing crops.
1590s, "conception, mental scheme," from Late Latin theoria (Jerome), from Greek theoria "contemplation, speculation, a looking at, things looked at," from theorein "to consider, speculate, look at," from theoros "spectator," from thea "a view" + horan "to see" (see warrant (n.)). Sense of "principles or methods of a science or art (rather than its practice)" is first recorded 1610s. That of "an explanation based on observation and reasoning" is from 1630s.
theory the·o·ry (thē'ə-rē, thēr'ē)
A systematically organized body of knowledge applicable in a relatively wide variety of circumstances, especially a system of assumptions, accepted principles, and rules of procedure devised to analyze, predict, or otherwise explain the nature or behavior of a specified set of phenomena.
Abstract reasoning; speculation.
A set of statements or principles devised to explain a group of facts or phenomena. Most theories that are accepted by scientists have been repeatedly tested by experiments and can be used to make predictions about natural phenomena. See Note at hypothesis.
In science, an explanation or model that covers a substantial group of occurrences in nature and has been confirmed by a substantial number of experiments and observations. A theory is more general and better verified than a hypothesis. (See Big Bang theory, evolution, and relativity.)