>Why do they call him 'Sir'?
Because that's what you do when someone is a Knight?
https://en.wikipedia.org/wiki/Tim_Berners-Lee#Awards_and_hon...
Because that's what you do when someone is a Knight?
https://en.wikipedia.org/wiki/Tim_Berners-Lee#Awards_and_hon...
A good example of this can be seen in the Constitution of the US. "No Title of Nobility shall be granted by the United States: And no Person holding any Office of Profit or Trust under them, shall, without the Consent of the Congress, accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State."
It was the Queen who granted him the title, not Switzerland.