Posts tagged paradox

In 2009, the British physicist Stephen Hawking performed a variation of this experiment, holding a party for time travellers, but sending out the invitations after the event had taken place, so that only visitors from the future could possibly attend. But nobody came. Dr Hawking said this constituted “experimental evidence that time travel is not possible”.

via http://www.economist.com/blogs/economist-explains/2014/01/economist-explains–6?fsrc=scn/tw/te/bl/ed/howcanyousearchfortimetravellers