Probable cause is a legal standard used by law enforcement authorities to determine whether there is enough evidence to make an arrest, conduct a search, or seize property. The determination of probable cause involves a careful evaluation of the facts and circumstances that surround a particular issue or incident, and requires specialized skills and knowledge of the law. Law enforcement officers must be trained to recognize and evaluate relevant evidence, and to follow proper procedures to ensure that the rights of individuals are not violated during the investigation process.