I never said how or when it should happen. Just that it should. (Would be great if it happens peacefully and gradually and with some effort to not hurt other folks feelings.) I also never said I think English is the "best". I only think it's the path of least resistance. Of all the languages that are serious candidates, most reasonable people would agree it's already the closest thing we have to a global standard language, especially in science, business and programming. Also, you can have and preserve culture even when a people's default language changes. I also would argue that there is nothing inherently special in "culture" which is distinct from it's component elements -- much of it is random and arbitrary and due to different choices and evolutionary paths caused by geographic, racial and tribal/breeding differences. I'd argue that much of what we now consider to be national culture will blur together and fade away over a long enough period of time. And the pace has likely accelerated due to modern travel and communication technology (eg. jet airliners and the Internet). I also think it would be a net-win eventually if all nations merged together into a single nation -- among other things, it would eliminate or at least drastically reduce the need or justification for large standing armies and the military-industrial complex. US wouldn't need to make another country a boogeyman (USSR/China/Iraq/Iran/etc.) and vice versa. What would have become a military/espionage situation in a multi-nation world become perhaps at most a legislative or law enforcement action.

Just thinking outside the box. Long term.