Share this postThis Week at Persuasionwww.persuasion.communityCopy linkTwitterFacebookEmailThis Week at PersuasionBook talk tomorrow! And a new event on tech and regulation with Kara Swisher and Clay Shirky.Persuasion StaffApr 13, 20212Share this postThis Week at Persuasionwww.persuasion.communityCopy linkTwitterFacebookEmailAn Iranian clergyman searches for the new moon to signal the start of Ramadan, from the ramparts of the Imam Ali observatory. (AP Photo/Vahid Salemi) This post is for paid subscribersSubscribeAlready a paid subscriber? Sign in