 It has been claimed that Zada spends minimal time – 40 to 50 hours a year – creating content for the site, but "8 hours a day, 365 days a year" on litigation, leading some to call "Perfect 10" little more than a copyright troll – by 2015, the company had filed 20 to 30 lawsuits.Zada is the son of Lotfi A. Zadeh, a computer scientist who coined the term fuzzy logic.Zada at one time owned a large mansion in Beverly Park which he sold in 2010 for $16.5 million.