When Frankfurt University said last month that anthropologist Reiner Protsch von Zieten had engaged in repeated scientific fraud for much of the past 30 years, the question naturally arose of how on earth he'd gotten away with it for so long. Protsch had deliberately misdated human fossil remains, plagiarized the work of others, and perpetrated various other falsehoods, a university commission found. He lacked the skills necessary to accurately carbon date fossil remains, but that didn't stop him from making such datings on numerous occasions and passing them off as genuine to other scientists.