Instruct: Classify the given Amazon review as either positive or negative.
Query: NOT clearly written for average readers

This is a terribly-written book. Sections of it are utterly incomprehensible for average readers who don't already understand the structural mechanics of a bicycle wheel. Although I agree with the author's preference for traditional wheel-building, I'd prefer it be written in simpler-to-understand language and include more practical concepts. For example: should I build a wheel with 32 or 36 spokes? He never makes this clear. How do I choose proper spoke lengths? He gives an equation on page 127 that seems impractical or unclear how to apply in actual use. (Am I really supposed to measure flange hole diameter and "effective rim diameter" and apply an equation using sine and cosine of the "spoke angle" when elsewhere he mentions, but never explains, a "reference table" of spoke lengths?)I'm an average reader who just wants to learn to build wheels. I don't believe this book prepared me to do this.