All of us rely on what we see. Can we really trust the evidence of our eyes? Take competitive sports. Fans
who see the same game will not agree with each
other and will disagree with the referee. It is the same
story in the courtroom. Trial procedure depends on
witnesses giving sworn testimony. But just how
reliable is the testimony of a person who reports what
he has seen? In a recent study, ten thousand
witnesses were asked to describe the man they saw
commit a crime. The study reveals that, on the
average, the witnesses overestimated the man's
height by five inches, his age by eight years, and
gave the wrong hair colour in 83 percent of the cases.
What can we do to keep error to minimum? First of
all, don't see something because you want to see it.
Secondly, try to stay relaxed. If you are tense, you are
liable to see red when the colour is blue.
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