Steve
With the risk of being considered rather dim, I must confess I have never heard about the expression curate's egg. Your phrasing indicates that the book was not your favorite for breakfast and you probably would have prefered a more hearty egg and bacon style of book.
I don't have Thiel's Fw book, so perhaps you could expand on that title, and perhaps better still explain exactly what is ment with curate's egg since I have to confess I am rather curious...
Cheers
Stig
PS: I also note that Thiel seems to write about Bremens past and also a lot more about shipping than about aviation.