Interesting discussion
. I'm glad I discovered this forum, and I figured this thread would be a good starting point. First of all, Marilyn vos Savant did hold the Guinness Book record for "Highest IQ" with a score of 228. However, there's a couple of notes about this. First, she was only 10 years old when she took the test. The problem with that is, testing for ages less then 16 at that time, technically had no upper-boundry unlike with adults, which have a feasible upper-boundry of 210 (which is why William James Sidis doesn't get listed in most tests). The second issue with Marilyn's score, is some time ago the testing was modified so that no one could score (child or adult) above a 210, and her name in Guinness was removed.
I won't go into this too deeply, but the overwhelming majority of the people (whoever they are) agree that Johann Wolfgang von Goethe would have an approximate IQ of 210 and would be considered to have the higest IQ of any known person.
Keep in mind a few things: the test focuses on people that speak native English with a strong suit in Math. This is why Enstein received a score of 160... had the test favored Physicists, he and Stephen Hawking would probably be at the top of the list. So IQ is really nothing more then a number, most in the field of determining "smart people" still consider William James Sidis the most intellegent man to have ever lived, regardless if his IQ was lower or higher then Goethe's.