After "Curve" was published, the government accepted the idea that terrorists could build nuclear devices, given only that they had access to fissile material and shifted gears almost immediately, an occurrence as rare as its effects were crucial. Taylor demonstrated that a few competent people mining the scientific literature could do the job. Many millions of dollars, pounds, francs, euros and rubles have been spent by many governments since publication of "Curve" to ensure that no terrorist ever gets his hands on plutonium or enriched uranium, and we are all safer as a result.
The book is, of course, incredibly readable and compelling. One would not expect less from the foremost prose stylist in the United States.
The book spells out in chilling detail how it is actually pretty simple to put together an atomic bomb that could rival a Hiroshima-class explosion, IF, and it is a big IF, you have enriched uranium or plutonium.
The book does into enough detail to prove the point that bomb construction is fairly simple, but it contains several deliberate mistakes (one in chemistry and one in physics, that I could find) that keep this book from being a "blueprint" for bomb construction.
Like "The Hot Zone" about ebolla, this book may keep you awake nights if you read it carefully and really think about the implications.