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LONDON, ENGLAND - MARCH 10: Professor Stephen Hawking and Benedict Cumberbatch attending a reception and dinner, in support of Motor Neurone Disease Association at Buckingham Palace on March 10, 2015 in London, United Kingdom. (Photo by Ian West - WPA Pool/Getty Images)

LONDON, ENGLAND - MARCH 10:  Professor Stephen Hawking and Benedict Cumberbatch attending a reception and dinner, in support of Motor Neurone Disease Association at Buckingham Palace on March 10, 2015 in London, United Kingdom. (Photo by Ian West - WPA Pool/Getty Images)