I simply believe that the dating methods commonly used are based on assumptions that are not necessarily correct. If I throw away something and in 10,000 years someone comes along and digs it up, why would they try to date it based on the surrounding rock?

If I was diving a shipwreck from the 1700's and discovered a modern coin, I would assume that it had been dropped by a previous diver, and not part of the original wreck. Why should we assume that a device that is obviously centuries past the date of a wreck was actually part of the wreck? I would agree with the hoax theory.