In 2009, Stephen Hawking threw a party for time travelers. He made invitations and sent them out. No one attended his party. Is it possible that no one wanted to travel through time and party with the famous physicist?
After being stood up, Hawking claimed, "I have experimental evidence that time travel is not possible."
Sources for reference and images:
http://www.dailymail.co.uk/sciencetech/article-2168178/Stephen-Hawking-held-party-time-travellers--turned-.html
Image 1: timetraveldocumentary.com
Image 2: creativebits.com