WTF

Or you just lie to everyone about your product until someone proves you wrong or even tries to sue you for the death of a family member ... and even then, you fight any accusations as much as possible until you either win or are forced to pay penalties.

And once the costs of accidental deaths out pace the cost of lying about it all, then you can change your message or your product.

Ford Corp was famous for balancing the cost of recalls that could prevent deaths to litigation. The last time I read about it 20 years ago, the company had narrowed it down to valuing human life at about two million dollars. If litigation per person rose above that level, then it was cheaper to announce a recall.