I will remember you said that! Now, do you you take EVERYONE at their word or just, you know, some people?
It depends upon the circumstances under which they gave their statement. If they made a statement that they would later have to prove, I would tend to put a lot of credibility in that statement. It was his statement that he believed a holdup was eminent, and he appears to be stacking to it. Under weight of law, he may have to back up that statement, and he appears to be doing it. On the other hand, if you have the magic ability to read peoples' minds, then a fortune is out there for you.