[cesarb]

> But now consider the potential impact of a malfunction: if the car engine fails to start, you might be inconvenienced, but you will be fine. On the other hand, if the rocket engine fails to ignite in space, you can't perform necessary orbital maneuvers and you might be in deep trouble.

On a smaller but more relatable scale: it's like the difference between a car or a train, and an airplane. When you have a malfunction on a car or a train, an appropriate response is just to stop; when you have a malfunction on an airplane, you can't just stop, you have to keep things working long enough to get to land before you can stop.