You believe THEY are lying. Why did They lie?
They did lie.....look at the various statements. As for their motivation to lie....that the real discussion. Evidence needs to be substantiated. The claim by Williams of a meeting of workmates on the 6th floor is unsubstantiated, unsupported by events and not investigated by the WC. In any court of law would be treated as such. He was a liar. The question is why. Why did others lie in an attempt to remove him from the 6th floor? There is no question that they lied.....it in the statements for anyone to see. Givens also lied about seeing Oswald during his "cigarette trip". I have no doubt Oswald lied in custody......the funny thing is we have no record of it, simply the statements of others. Yet we have signed statements from Williams, Jarman, Norman and Givens that all contain lies.
I have serious issues with those LN proponents who dismiss the evidence that seems inconvenient to them. Why investigate the case at all? How far have they come from the conclusions of day one? The WR author(s) were unwilling or unable to digest and analyse (or both) their own assembled evidence.