The problem with all polygraph tests are false positives. Innocent people can false if they feel an increase in any emotion, angry, fear, sexual arousal. Not just guilty.

• 无论是用鸡蛋还是测谎仪，工具都只能显示被测试者出现了情绪波动，但他可能是在愤怒，害怕，甚至性冲动，而不一定只是因为撒谎而内疚。