 Justice O'Connor began by reciting certain basic ideas about what does not make a seizure unreasonable.It is not unreasonable for the police to approach a citizen and ask him a few questions, as long as a reasonable person would feel free to disregard the questions and carry on with his business.For police activity to constitute a seizure, the Court had held in "Terry v. Ohio", , that there must be a show of physical force or other authority.