Expectation (glossary entry)    

Expectation is an expected outcome, result, or future event. In a community political context, expectation often is associated with a perceived commitment. If the expectation is inaccurate, that can cause problems in situations involving group work; see ownership and responsibility. See also management.

Insanity is doing the same thing, over and over again, but expecting different results.
-- Rita Mae Brown, Sudden Death (novel, 1983, page 68)