If you’ve grown up in the D.C. metro area, you’ve probably heard of Thomas Jefferson High School for Science and Technology (better known simply as TJ). The school, located in Alexandria, is a Fairfax County public school that was turned into a magnet school for technology in the early 90s. Over the weekend, the Post published an article about four young alumni of TJ (math and computer geniuses, naturally) who designed a multiplayer online game…