Who's Fault Is It Anyway?

If there is doubtfulness on whether the responsibility may fall on me or someone else, I define who has responsibility if they did not try to help the situation or if they caused the situation. When something bad happens that involves me I know that I bear responsibility for it if I caused the situation or knew about something that could have hindered the situation. If I fall off someones roof while mending it I do not think that it is their or my fault because they did not cause the situation or could have stopped it from happening. If someone borrowed my car and has an accident because of the faulty brakes it would be my fault if I knew about the faulty brakes and let that person drive the car anyway. If I did not know about the brakes and let the person borrow the car I would not feel that I was responsible for it because I could not have prevented it from happening and I did not purposely try to harm them. In certain situations it could be either persons fault but in some situation there may be no one who holds responsibility for situations.