Television shows like CSI, Forensic Files, and The New Detectives created public knowledge and interest in forensic science, and ramped up scientific expectations for those involved in real-life criminal investigation and prosecution. Prosecutors call this "the CSI effect," the expectation among jurors that the prosecution will feature physical evidence and expert witnesses. The CSI effect, according to some, has also caused jurors to expect crime lab results far beyond the capacity of forensic science. In cases where there is no physical evidence, some prosecutors either eliminate potential jurors who are fans of these TV shows or downplay the necessity and importance of physical evidence as a method of proving a defendant's guilt. Some academics, based on studies, deny the existence of the CSI effect. Most prosecutors, however, are certain it exists.