This book is from 2017. Comes with an obi (sash). Which is better, a weak yen or a strong yen? Why the economy isn't recovering despite low unemployment. New business opportunities in the age of artificial intelligence. The message: "If you don't have knowledge, you can't fight." - Title: Economics as a Weapon - Author: Kenichi Ohmae - Publisher: Shogakukan - Price: 1400 yen - ISBN: 978-4-09-389790-3 Thank you for looking.