1. Janus has been a carpenter for twenty years in new residence construction. During that time he became Certified as a Master thus able to train new apprentices.His Black and Decker electric saw developed a small noise last week and Janus did nothing. Today it started on its own and injured Janus.The instruction for the machine states that it should be unplugged when not in use and should be refurbished every 500 hours of work.Last refurbishment was 1800 hours of work ago and he generally leaves the saw plugged in.What is Janus's arguments that he suffered damages due to the saw?What is Black and Decker's argument?