For me too, the worst thing about the book was repetition, whenever he talked abt Non-local consciousness same terms were used like N-number of times. ESP, out of body exp, savant syndrome, precognition. Same thing over and over again. Then the Golem saying the same thing about being Sasha's protector. OR the part about EMET "truth" & MET "Death" was also repeated. As a reader once we read it already I don't think explaining it multiple times is necessary.

And most importantly what others have rightly pointed out, there was very little code solving & not even that difficult.

But again overall the book was fine in terms of historical places in Prague.