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Lie detectors are now considered an outdated and ineffective way of determining guilt or innocence; they can be easily beaten or dodged by someone with a few minutes' training and some practise.

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14y ago
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13y ago

It measure different biological functions to determine if one is being truthful or not. It's accurate is a point of conflict.

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10y ago

Because when someone did something you would need to know if there telling the truth or not.

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Q: How is the lie detector test relevant?
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