If you don't score in the top 2% of the population you'll never get into the High IQ society which celebrates its 60th birthday this year. Ed Power reports
It is the world's most exclusive club, to which only the very brightest can hope to win entry. To join, you must demonstrate the sort of hyper-intelligence synonymous with an Einstein or Stephen Hawking. Most fall short - the failure rate for admittance is 98%.
Yet what exactly is the point of Mensa, the high-IQ society which this year celebrates its 60th birthday?
Do its members - there are over 100,000 worldwide, and some 1,200 in Ireland - come together to pore over complex mathematic challenges. Will you find them gathered around Sudoku puzzles, laughing at how easy they are?