Task 9 Summarize(Lie detector)

    The various ways in which this machine can be used is for screening, investigating thieves, and even periodic staff checks.The objections to its use for example the potential application. especially as there seems no law to prevent its use.it can also be used to probe a whole range of personal issues totally unrelated to job. the PSE can be used without the subject even knowing ; its inventors analysed the televised water gate hearings and told the press who they though was lying.