Wrong. They have stopped. There has not been a crash since when? And they did not just "fall out of the sky". A well trained pilot would have been able to prevent the crashes. In fact that happened to the Indonesian Max on the flight before it crashed (pilot disconnected the system causing trouble and allowed the plane to land safely). The real answer is when the FAA certifies it to fly passengers again. I have full confidence that when that happens the plane will be 100% safe and protected against even poorly trained pilots.