Method described would work only on Time Travellers that are stuck in our time with no technical means of going back and no detailed documented knowledge of cur

Method described would work only on Time Travellers that are stuck in our time with no technical means of going back and no detailed documented knowledge of current time [1]. Two queries chosen (pope and some comet) are non significant in daily life. You would be lucky to find 1 in 10000 people that ever in their lives formulated a question about those subjects out loud. In my opinion it would be more prudent to look for signs of prior knowledge about natural disasters. Stranded time traveller will be more interested in avoiding tsunami, earthquake, tornado or a flood, and will most likely know general time frame instead of detailed dates (unless he possesses [1] device). *1: $25 WikiReader Pocket Wikipedia http://www.amazon.com/WikiReader-PANREADER-Pocket-Wikipedia/dp/B002N5521W http://www.amazon.com/WikiReader-PANREADER-Pocket-Wikipedia/... Something tells me time traveller from the future would have modernized equivalent.