Oh, I'm not saying everything (or even anything) about the witness' account is wrong. I'm just saying that memory in general is much less reliable than we feel it is based on our subjective experience. There are all kinds of phenomena that cause people to omit very major things from memory, like another passenger, or dreadlocks. I think you're right about the vest, though. It is extremely unlikely that someone would spontaneously confabulate that detail for no reason without some sort of leading questioning, and together with the vests in the garage, it's very suggestive. I just think we can't necessarily take everything a witness says as gospel, even if they are smart and well-intentioned.