主题：观察：Google事件背后是怎样的博弈？ -- SkyWalkerJ

Sting operations are fraught with ethical concerns over whether they constitute entrapment. Law-enforcement may have to be careful not to provoke the commission of a crime by someone who would not normally be inclined to do so. Additionally, in the process of such operations, the police often engage in the same so-called crimes, often victimless, such as buying or selling contraband, soliciting prostitutes, etc. In common law jurisdictions, the defendant may invoke the defense of entrapment.

Contrary to popular misconceptions, however, entrapment does not prohibit undercover police officers from posing as criminals or denying that they are police [2]. Entrapment is typically only a defense if a suspect is pressured into committing a crime they would probably not have committed otherwise, though the legal definition of this pressure varies greatly from country to country. For example, if undercover officers coerced a potential suspect into manufacturing illegal drugs to sell them, then the accused could use entrapment as a defense. However, if a suspect is already manufacturing drugs and police pose as buyers to catch him, then entrapment usually has not occurred.