D contradicts him ??? 4. embezzlement is a dishonest act so could be asked if embezzeled from employer [608b- C-E] but cannot be asked about anything short of a conviction ??? proper impeachment by asking about an untruthful act under 608a ??? but if denied then cannot disprove it by offering extrinsic evidence to prove the bad dishonest act ??? [non-collateral rules applies to other extrinsic evi