It's important because you need to be prepared if an accident goes wrong, plane crashes happends only once, the chances are low, but it's never zero.

Penjelasan:

The reason why it's so important is because Airline companies have a tendency to tell you the emergency protocol for your own safety, if one of the turbo boosters had been broken or a crash had happened, they had it all prepared with the safety demonstrations.

If they didn't perform the safety protocols if something had happened... Chief, I don't think you'd live for another day if you're lucky enough.

maaf jika salah