Thread:Thecentroid/@comment-24808864-20150530181633/@comment-28838092-20150918231510

Well, Thecentroid could have initially created his account through the Khan Academy Wiki months ago and didn't make any edits. HMcCoy in turn posted this message on May 30th and Thecentriod didn't respond. He finally made his first edit on September 11 which gives him the date he was joined.