Editing Intension (section)

==== Examples ====
#Everyone who has read ''[[Huckleberry Finn]]'' knows that [[Mark Twain]] wrote it.
#[[Aristotle]] often remarked that he enjoyed [[stargazing]].

The first example has a different logical value if the term "Mark Twain" is replaced with the co-extensive term "The author of ''[[Corn-pone Opinions]]''", since not everyone who has read ''Huckleberry Finn'' knows that the same author also wrote ''Corn-pone Opinions''.

The second example has a different logical value if the term "stargazing" is replaced with the co-extensive term "looking at luminous [[spheroid|spheroids]] of [[Plasma (physics)|plasma]] held together by [[gravity|self-gravity]]", since Aristotle would not have been aware of this definition of the term "star", and therefore would not have used it in a remark.

The intensional statements above feature expressions like "knows", "possible", and "pleased". Such expressions always, or nearly always, produce intensional statements when added (in some intelligible manner) to an extensional statement, and thus they (or more complex expressions like "It is possible that") are sometimes called ''intensional operators''. A large class of intensional statements, but by no means all, can be spotted from the fact that they contain intensional operators.