because they're scared, because they know they've done something wrong. and their intent isn't to pin the crime on someone else but it's out of fear. that's the defense many attorneys will bring up in court. >> or in the alternative, they do it because they want to cover up what they did and what you can argue -- and the prosecution certainly will -- is that this evidence is a consciousness of guilt. you knew what you were doing, you knew it was wrong, you didn't render aid or other assistance at that time. instead, you were concerned with one person, that was yourself. and out of that concern, you walked over to get the taser to pick it up, to make it, as dan said, consistent with your story, what you put in that police report before you knew there would be a video out there that would contradict what you said. and that's how it will be used. this is very powerful. >> so what we're trying to figure out is all these actions after the fact and what they say, as joey says, may show a consciousness of guilt.