Summary
Jobs, advances in court evidence, and forms of entertainment were opportunities that were innovated by the lie detector. With a polygraph test you have to have a professional interrogator by the lie detectors. With a polygraph test you have a professional interrogator and that presented new job opportunities. An examiner must be able to interpret nervousness and many other emotions in someone who is taking the test so that the answers will be correct and accurate. People are also needed who can manufacture the actual machine. Another opportunity was provided to court systems because this was an advance in law enforcement that would help close court cases and bring peace to our streets quicker. One important opportunity was the ability to screen possible government employees so that we know the people protecting us are truly the best out there. The polygraph test is an indispensable invention that changed America.