Hard to write a concise summary or reaction to the books as it would basically amount to a major philosophical discussion... suffice it to say, forty years on, book with still intriguing, interesting, depressing, uplifting, accusatory and redemptive.

The audiobook version was well done, though I would recommend against listening while multi-tasking if you are easily distracted like me -- found myself rewinding several times after noticing my focus drifting. Even when I was 100% dialed in, I had to give some sections a second listen to parse all the information being presented.