I have this in book form and it's a good overview - very useful for general knowledge revision. As an audiobook, however, it's very disappointing. No adjustments have been made for the audio format. There are even continual comments like "see page 150". It's just one long list of facts with very little narrative or commentary. Educational audiobooks ought to be along the same lines as lectures. I really hope there will be more of them! But there's no point in reading out an encyclopedia or dictionary.