I worked super hard to insure accuracy of all the topos and beta for every route. In several cases I climbed routes multiple times to further refine the beta and to more accurately draw the topos. I pretty much always climbed with a pencil and paper in my pocket, often stopping mid pitch or even several times a pitch to draw lines and scribble (sometimes to the dismay of my climbing partners, thanks guys you know who you are). In the book I have climbed many of the routes more than 10 times and I have climbed the Beckey route more than 50 times (most of those times have been guiding). On several occasions if I wasn't 100% sure I went the best way I would rap and re-climb up another way to see if it was better (also much to the dismay of my climbing partner, this was typically met with a "really..... we are gonna rap back down that pitch....really?". But in the end it resulted in a rad book with a ton of good info. I hope everyone digs it.
Tyson.g as far as the North Ridge goes, being a fairly moderate ridge means in a few sections there are subtle variations especially on the easier pitches. I climbed this route twice and talked with quite a few other climbers regarding the "best way" and have drawn what I think that is into the topo.
Even if you felt like you might have gone a slightly different way on the easier pitches I am sure most of the time when the climbing got more difficult you where forced into some of the major climbing features like the huge gendarme and the final corner system that are represented on the topo.