I open up the book and the very first sentence I see is
Passing the PE exam has served as a significant milestone in the career of professional engineers since the exam’s origination.
Frustratingly, I’m here to do a fast readthrough, not a serious copy editing, so I just mark the addition of an s to career and move on. But significant milestone is redundant; passing the exam doesn’t “serve as” a milestone, it is one; and origination for beginning is dreadful. I can see already that this readthrough will be a teethgrinder, but I only have time to fix the out-and-out errors, I only have time to fix the out-and-out errors, I only have time to fix the out-and-out errors ….