A book explaining thinking methods useful for business. - Title: What Smart People Think Before They Speak - Author: Yuya Adachi - Publisher: Diamond Inc. - Price: 1500 yen - Copies Sold: 710,000 - ISBN: 978-4-478-11696-2 Thank you for viewing. I only read it once with a cover on. There is a crease on the cover from when I bought it. Please check the third photo.