Can you really ever be sure if someone is lying to you? According to research from the text, we are only able to tell 50% of the time. With a small portion of us able to exceed 70% of the time. But beyond that it appears that there are no lie-detection test that are accurate without discriminating against the innocent and truthful. The most effective way would appear to be the verbal responses of people. But even this has its flaws as anybody who is decent with words could get away with lying. So can we ever truly be sure if someone is lying or telling the truth?