I made this point on the old site but I'll repost it..just to..join in the debate.
Was Ruby the assassin.Was he ordered to silence Oswald. If he was why wasn't he in place at the appointed time.10.00 AM. At that time he was still in his dressing gown in his apartment etc etc..sure we all know the gist of it...wire stripper money..took his dog..etc etc.
The only alternative explanation for Ruby actually carring out the killing to silence Oswald is this. He is under threat of death..or even worse... to silence Oswald and that's why he was stalking Oswald..but overnight he decides he's not going to do it..no matter what the mob do to him he's not going to kill Oswald. And that's why he is not at the Police station on time to kill Oswald.
But after wiring his stripper the money he goes into the Police headquarters and realises Oswald still hasn't been moved...and it is then, at that moment,he thinks that if he doesn't carry out the mob's orders..he will be killed..and probably in a very cruesome way. Fear of the mob takes over..he then guns down Oswald. That is really the only other alternative explanation for Ruby's actions.