42 is not the only answer!!!

'X's initial proposal for the 'Y' in march 1989 was rather unpromisingly titled "Information Management-A Proposal" . In 1999, Time Magazine named 'X' as one of the 100 Most Important People of the 20th Century. In 2007, 'X' was ranked first, alongside Albert Hofmann, in 'The Telegraph's' list of 100 greatest living geniuses.

Identify 'X' & 'Y'.

'X'-Tim Berners Lee,'Y'-World Wide Web