I would also be amazed if it was true that someone could live alone for more than a month on a desert island. Because basically humans are
social creatures, so we need the presence of other humans to live. I wouldn't even last more than a week having to stay on the island alone,
let alone run out of food. I can't imagine having to hunt for food, therefore it requires skills and knowledge to survive if we plan to live alone
on the island for a long time.