The fact is that eyewitnesses frequently make mistake.Eyewitnesses often can't see the criminal clearly because of bad light,the criminal is clothes or the distance from the crime.When eyewitnesses do have a good view.They are often too shocked to look at the criminal's appearance and concentrate on the weapon instead.To make matters worse.Studies have shown that people find in more difficult to remember the appearance of people from another race.At least eyewitnesses usually choose the right person in police lineup,but they almost always pick someone.