“Having a lot of say in design, and keeping secret an intentional violation of government regulations from your entire international company are two pretty different things.“<p>But the difference between intentional benchmark optimization (which the whole industry is doing) and illegal certification manipulation is a rather subtle one. The former would a perfect front for the latter and the intersection of all employees who sufficiently understand the legal situation and those who sufficiently understand the engine could theoretically even be the empty set. (in which case blame would default to those high enough in the org-chart to have members of both groups under them)