OK, we Cecil is the World’s Smartest Human.
Marilyn vos Savant is currently the Human with the Highest IQ; the 9-year-old Pre-Med student in Chicago may change this.
Jeeves at http://www.ask.com recently directed me to the website of the Word Detective, who might well be the World’s Most Learned Human.
I might just have to put in a vote for the Word Detective, if only because I discovered the wisdom of Unca Cecil through his website. Anyone smart enough to direct people over to TSD must have some learnin’ behind him!