This term is used when considering crime and location or ecological or environmental approaches to crime (not to be confused with Green Crime!). One explanation (from Baldwin and Bottoms) of why certain neighbourhoods or housing estates might have a particularly high level of crime is that they have passed a "tipping point". One impact of raised levels of crime in a neighbourhood is that law-abiding residents try to move away and criminals move in, attracted by the subsequent low rents/house prices and chance to live among like-minded people. At some point in this process it is suggested that an area might pass a point of no return after which it becomes a hotbed of criminality.