The Fitbit Flex is an activity tracker aimed at measuring your exercise, diet and sleep. The device was my constant companion for about a week, and by the end of it, I felt informed about my activity levels, and was motivated to get moving.
Whether we like it or not, we're constantly judging the intelligence of others, estimating their level of competence by evaluating their responses to our questions. Some people are better at detecting intelligence than others, but that doesn't mean you can't learn how. With practice, you should be able to gauge the intelligence of others with a decent degree of accuracy, though you should always be prepared for surprises.
In summary, IQ stands for intelligence quotient, which is your cognitive abilities, relative to what others can do of different ages. The concept of IQ was invented in the year 1904 by Alfred Binet. The equation used to calculate a person's IQ score is Mental Age / Chronological Age x 100. On most modern IQ tests, the average score will be 100 and the standard deviation of scores will be 15.