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A '''sufficient condition''' is one for which the following is true:
A '''sufficient condition''' is one for which the following is true:
: If A is a sufficient condition of B, then if A is true, B ''must'' be true.
: If A is a sufficient condition of B, then if A is true, B ''must'' be true.
For example, "I heard thunder" is a sufficient condition of "There was lightning nearby," because if I heard thunder, there ''must'' have been lightning nearby to cause it.
For example, "I heard [[thunder]]" is a sufficient condition of "There was lightning nearby," because if I heard thunder, there ''must'' have been [[lightning]] nearby to cause it.
However, "There was lightning nearby" is ''not'' a sufficient cause of "I heard thunder," because there may have been lightning nearby that I did not hear.
However, "There was lightning nearby" is ''not'' a sufficient cause of "I heard thunder," because there may have been lightning nearby that I did not hear.
[[Category:Logic]]
[[Category:Logic]]