Well he kinda proved by day 9 its almost impossible to do, he had to break into his emergency kit and use the anti biotics other wise it probably would have been the end of the adventure so realistically the experiment as originally set out failed, im not knocking him as i doubt id last as long as he did before needing them, Dont think id have eaten anything (apart from the coconuts) without first cooking, and his water looks dodgy to me, if he's really drinking out of plastic bottles washed up on the shore without out being able to sterilise them then its little wonder he got stomach problems.