Thank you for viewing! This is "Smartphone Era Philosophy Revised and Enlarged Edition" by Yoshihiro Tanigawa (Discover Twenty-One). This book is perfect for those who are struggling with the "always-on world" and how to interact with social media, and for those who want to think deeply about "loneliness" in the modern age. [Condition of the product] I have only read it once and have kept it with care. There are no writings or sun damage, but there are some minor scratches and folds. (Please refrain from purchasing if you are looking for a product in new condition) [About purchase] Instant purchase is OK. I will pack it carefully and ship it quickly.