Is it more than superficial though? Depends on your definition of 'superficial':
If I buy a book on SPDY (or any technology), it is likely because I want to use it in a production/live environment.
I want to buy a book on technology from someone who has run a live system, and got the battle scars one gets from doing so; who has learnt from the experiences, which they can then share.
When it comes to technology, one can research all they like about it, but until you have practical _experience_ in a live environment, I would call it 'superficial'.
(From the blog post it is not clear; if you have run all these technologies live then I agree, your understanding is not superficial)
If I buy a book on SPDY (or any technology), it is likely because I want to use it in a production/live environment.
I want to buy a book on technology from someone who has run a live system, and got the battle scars one gets from doing so; who has learnt from the experiences, which they can then share.
When it comes to technology, one can research all they like about it, but until you have practical _experience_ in a live environment, I would call it 'superficial'.
(From the blog post it is not clear; if you have run all these technologies live then I agree, your understanding is not superficial)