Mr. Hale has suggested that Deputy Governor Danforth allow John Proctor and Giles Corey to leave the court and come back with a lawyer to present their argument that the girls are lying, based on the new testimony provided by Mary Warren. In response, Danforth claims that a lawyer would be of no real help here because the lawyer would not be able to identify a witch. In fact, Danforth cannot even identify a witch, unless she were to attack him directly. He says that, since witchcraft is an invisible crime, only her victim would be able to identify her since the witch would never accuse herself. This kind of testimony, where a witch's victim might swear that a witch sent out her spirit to attack the victim, is referred to as spectral evidence (the witch's spirit is her "specter"), and this kind of evidence was permissible during the Salem Witch Trials—in fact, most people were convicted on spectral evidence. Because of the nature of spectral evidence, only the accuser could provide it, and it would be her word against the accused witch's.