&gt; I work in an insurance company where 100% of benefits coding changes are put through QC, and then another 25% are put through a second level of QC.<p>For electronic engineering this is a known fault mode of inspection.<p>When the first line inspectors are busy they&#x27;ll shovel stuff theough with less inspection because there&#x27;s someone else to do so checking.  But now that other person is busy, and they&#x27;ll shovel stuff through because if the first line of inspectors are doing their job properly it should be okay.<p>So it&#x27;s interesting to see this not fail in an indistry tha is data driven and cash sensitive.<p>It&#x27;d be interesting to know what the difference is.