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The polygraph, a device with a history dating back to the early 20th century, has captivated both fascination and controversy. Its invention stands as a testament to humanity’s quest for truth and deception detection. Operating on the principle of physiological responses to stress, it elucidates its mechanism, where fluctuations in heart rate, blood pressure, and perspiration are monitored to infer honesty or deceit. However, the intricate dance between truth and deception reveals the human capacity to manipulate these physiological signals, rendering the polygraph susceptible to manipulation. This vulnerability underlines where despite its widespread use, courts often deem polygraph results as insufficient evidence, showcasing the complex and contentious nature of truth-seeking in the modern age.

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An edutainment series that delves into the fascinating revelations our world has to offer! History, science, sports, fashion, do-it-yourself, recipes, animals, magic; each episode focuses on something to know about our world. Hungry Brain is all about learning and having fun at the same time!

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