I have to agree with Steve... as another old codger !!! I listened to it on the bus going into my home city (my wife went shopping and I did a bit of street photography) I caught the other half on the bus back....I listened to it all the way through in one sitting. It was very good, but too much information to process at one time, for this senile, old, codger. You all covered the details very well on each, but after while it all begin to run together in my head.