Comment by wat10000
4 hours ago
There’s an obvious example of this with twin-engine airplanes. Having two engines obviously makes you a lot safer since you still have power if one fails. But dealing with an engine failure takes some skill, and your probability of experiencing a failure doubles. Airlines train their pilots to handle it, but if you’re a more casual pilot and you’re flying a twin, you have to be careful to ensure it’s actually making you safer.
Two engines also give you a lot more options for control surface failures. It's objectively safer and why all commercial airliners are (at least) two engine. But it does require more training for the pilot.