I once read that the Art of Engineering is the art of risk mitigation. One can never reduce risk levels to zero in any designed system. But one goes as far as one can in pursuit of that goal. Real engineers always feel uneasy. The best continue to feel that way even after a product is out the door and into the wild.
I'd hazard a guess that engineering goal hasn't changed for TIP, or for Mirko. What's changed in today's new world is that pesky definition of "as far as one can..."