"Usable Dialectic: If You Understand Hegel, You Can See the Future of the IT Society" Hiroshi Tasaka Price: ¥1500 I read it once and have kept it at home. ・Stored in an environment without pets or smokers. ・Please refrain from purchasing if you are concerned about minor details, as it is stored at home and inspected by an amateur. ・Instant purchase is welcome!