[youtube https://www.youtube.com/watch?v=eAhfZUZiwSE&w=420&h=315] Alexander Overwijk dessine un cercle parfait à la main? Qu’en pensez vous? Alexander Overwijk shows his unique talent of drawing perfect freehand circles. What do you think? Story from http://www.avatargeneration.com/2012/10/incredible-blackboard-drawing-skills-how-do-you-compare