This was the first time I read a book from the DK Big Ideas series, specifically for a topic I know at least a little about, so I thought I should write a review.
Reading this for me can best be described as "love-hate", though leaning towards catastrophic. Simply put, it was extreme breadth and bare minimum depth. At times it felt useful, and at other times it felt so cursory or oversimplified to the point that the meaning of the original concept has been changed too much. I appreciated that it reduces concepts to the fundamentals and addresses an extreme diversity, though most of the time it is done in such a way that one should simply look into the texts of the philosophers.
As a book series, it has good features such as before and after related influences, argument diagramming, drawings and pictures related to the topics, and brief biographical summaries of each of the philosophers. Furthermore, the book did well in including 1. various contemporary philosophers, and 2. philosophical ideas from other disciplines which were not necessarily by philosophers. I suppose yes, in a way, it did provide some of the big ideas.
If I were to read this again, or read any other book in the series, I would only use it to skim through quickly while not looking too deeply into the text. In general, the time and money of one might be better spent on other introductions.