Johnny Brewer notices a guy and for some reason decides that he is suspicious and looks dangerous [puny Oswald?]... and there was never any corroboration concerning this observation. Why is a reasonable doubt considered a "big mistake"?
Because common sense (alone) dictates it's a "big mistake" to totally discount everything Johnny Brewer had to say.
Why, you ask?
Because there must have been
SOMETHING about Oswald and his demeanor on 11/22/63 that caused Brewer to leave his store and physically follow this guy (Oswald) up the street and into the Texas Theater. (And you surely don't deny that Brewer
did follow Oswald into the movie theater, do you? Remember, Brewer himself was grabbed initially by the police when he opened the back door of the theater. Or do some conspiracy theorists think that incident was fabricated too?)
In short....
If Oswald really
wasn't "acting funny" and looking "scared" and looking as if he had been "running" when Johnny Brewer saw him in the lobby of his shoe store, then please give me one good reason for Brewer wanting to follow this person up the street to the theater on November 22nd?
Any bright ideas? Or would you rather continue calling Johnny Calvin Brewer a big fat liar?