DISCREPANCIES IN A WITNESS’S TESTIMONY
Discrepancies in a witness’s testimony or between his testimony and that of others, if there were any discrepancies, do not necessarily mean that the witness should be discredited. Failure of recollection is a common experience, and innocent misrecollection is not uncommon. It is a fact, also, that two persons witnessing an incident or transaction often will see or hear it differently. Whether a discrepancy pertains to a fact of importance or only to a trivial detail should be considered in weighing its significance.
NEV. J.I. 2.08