What determines the existence of probable cause according to the totality of the circumstances standard?

The totality of the circumstances standard emphasizes that probable cause is established by considering all available information, rather than relying on a single aspect or piece of evidence. This holistic approach allows law enforcement officers to assess the situation by taking into account various factors, including witness statements, physical evidence, the officer's training and experience, and the context of the situation.

By evaluating the complete set of circumstances surrounding an event, officers can make more informed decisions about whether there is a reasonable belief that a crime has occurred or that a suspect is involved in criminal activity. This comprehensive assessment is critical to ensuring that police actions are justified and uphold constitutional protections against unreasonable searches and seizures. In contrast, limiting the evaluation to just eyewitness accounts, legal definitions, or only physical evidence would disregard important information that could affirm or negate probable cause.