Well, let’s start with ancient China. “In ancient China suspect were given rice to chew, the idea being that liar’s would be too nervous to salivate so the rice would remain dry”(Gaidos 38). Interesting, I wondered how that work out for them. But how do we know now? “When someone’s lying, subtle changes in the vocal cord are said to occur as a result of the stress, producing a distorted sound wave”(Prusher 1). When people get stressed they sound different I guess. I’m not sure how that works, but it’s not my problem. But there is a guy who is working on making an improved lie detector. Truster’s new lie detector concentrates mostly on stress levels in people's voice by measuring its “cognitive messages” and low-frequency waves that are not audible and are 85% accurate (Prusher 1). So stress is a bad thing whenever you’ve been accused of something. Good to know, I guess if you're truthful and never stressed this test will be a breeze. “Using a complex algorithm and nine different parameters, the inventors say they are able to pinpoint whether the person's stress is caused by lying, excitement, exaggeration, or an emotional conflict”(Prusher 1). Lot’s of big words but basically Truster’s is an inventor who is making a lie detector that is determined by stress…