“Just as the jury should be warned, for example, not to misuse use their knowledge of a defendant’s previous convictions, so when the defendant has lied, in order to avoid the prohibited reasoning, the jury will often need to be warned -- perhaps more accurately, reminded -- of the reality, namely that an innocent defendant may sometimes lie and that the inference of guilt does not automatically follow.”
“sometimes people tell a deliberate lie for a reason thatisn't necessarily supportive of guilt”