Good:
Precise and concise explanations, not wordy.
Very thorough coverage of household things, not just furniture and art objects, but also clothes, kitchenware, graphics etc.
Illustrated objects have very good pointers to highlight design features.
Illustrations are big.
Not so Good:
Book does not show how objects & furniture were placed in rooms during the different periods; how objects' design was influenced by their proximity to others.
For a book on design, hardly any picture on interior design, nor the design of homes.
How related were the designs of such household items related to the homes they were placed in, i.e. architecture? Book focussed on objects, isolated treatment.
Feels like a catalogue, still not enough of the underlying philosophy behind the design, the uniqueness of individual designers, the wider social context.
I recommend a more holistic approach to design in Penny Sparke's "A Century of Design: Design Pioneers of the 20th Century".