FILE PHOTO: Microsoft President Bill Gates (L), accompanied by University Vice-Chancellor Professor Alec Broers,..

FILE PHOTO: Microsoft President Bill Gates (L), accompanied by University Vice-Chancellor Professor Alec Broers,..

FILE PHOTO: Microsoft President Bill Gates (L), accompanied by University Vice-Chancellor Professor Alec Broers, meets Professor Stephen Hawking on a visit to Cambridge University October 7, 1997. REUTERS/Stringer/File photo