Let's discuss a hypothetical situation....

....You are a passenger in a vehicle. The driver is reversing round a tight difficult corner. You can see what they can't see, a wall very close to your side. So, should you keep quiet and be polite because you don't want to be a backseat driver? Or attempt a quick, gentle word like, 'You have noticed this, haven't you?'



And if the wall does get hit and you have not said a word, whose fault would it be?