It is pretty well accepted among most lawyers that eye witness testimony is often inaccurate.  The story I heard in law school was that a professor staged a fake attack during class.  He had someone walk into his room and pretend to shoot him.  The shooter ran away and the professor jumped up to show

 I discuss this with clients so often.  How much is my case worth?  Most clients believe their case is worth millions.  And, it is.  To you.  But, what is it worth to a jury?  I have explained that studies of discrimination lawsuits have found that most often, juries do not award compensatory or emotional suffering