Why is it very difficult to detect deception?

Question

Quizplus · Accepted Answer

Research has shown that many commonly believed nonverbal cues (such as avoiding eye contact or fidgeting) are not reliable indicators of deception. Instead, there are subtle nonverbal cues that are more accurate, but people often don't know to look for them or don't realize their significance. Additionally, people often have a bias towards believing that others are telling the truth, which can make it difficult to detect deception. Detecting deception may not necessarily be an evolutionary adaptive strategy, as it is not essential to survival and reproduction.

Why Is It Very Difficult to Detect Deception