You've identified, again, the level of complexities, and thus the need to carry out a full, well-thought-through research project and program to identify what could be seen to be unforeseen consequences related to a particular decision—for instance, with respect to seats—and validate that mitigating factors are actually in place that will prevent injuries in one scenario—for instance, a rear-end collision—but that won't exacerbate them in another—for instance, a T-bone or a side impact collision situation. That includes enhanced seat stiffness required for the three-point harness, and a number of other different factors. That is part of the reason why it has taken so much time to get to the point at which we're able to make an informed decision.
Mike, I'll let you build on that point, that particular question.