Linguistics
– Semantics
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Semantics is the part of linguistics that is concerned with meaning. Semantics concerns both the meaning of single words and the way the meanings of the words combine produce the sentence meaning. A fun exercise is the computation of truth values of sentences.
Each of the following sentences consists of 2 subordinate clauses, which are linked via a connector (and, or, if, if and only if). Each connector has its own truth conditions, which determines under which circumstances the whole sentence is true.
Imagine a situation in which Lisa is eating popcorn but not watching a movie. See if you can work out which of the four sentences below are true and which a false.
Lisa is watching a movie and eating popcorn.
Lisa is watching a movie or eating popcorn.
If Lisa is watching a movie, she is eating popcorn.
If and only if Lisa is watching a movie is she eating popcorn.