{| style="float:right; background:none;" |- | |- | |} The broken windows theory is a criminological theory of the norm-setting and signalling effect of urban disorder and vandalism on additional crime and anti-social behavior. The theory states that maintaining and monitoring urban environments in a well-ordered condition may stop further vandalism and escalation into more serious crime. The theory was introduced in a 1982 article by social scientists James Q. Wilson and George L. Kelling. Since then it has been subject to great debate both within the social sciences and in the public ...

A joke is something spoken, written, or done with humorous intention. Jokes may have many different forms, e.g., a single word or a gesture (considered in a particular context), a question-answer, or a whole short story. The word "joke" has , including wisecrack, gag, prank, quip, jape and jest. To achieve their end, jokes may employ irony, sarcasm, word play and other devices. Jokes may have a punch line, i.e., an ending to make it humorous. A practical joke or prank differs from a spoken joke in that the major component of the humour is physical rather than verbal (for example placin...