I am much less likely to read instructions that seem to be written by a lawyer, as I imagine are many others. If they provide simple, clear instructions I will use them (like Ikea provided for this desk I am using now). I find many good instructions require almost no words (they use pictures very well).
As Mike Wroblewski stated in his post:
Poka-Yoke (mistake-proofing) is one of my favorite ideas. I just love the idea of not only making something that works well but making something that is difficult to have work badly. I encourage you to follow Mike's advice: "Look at your processes and products. How can operator errors occur? Think how a simple poka-yoke can eliminate the error and make it mistake proof."
Web site: John Grout's Mistakeproofing Site provides some everyday examples.
Book: Poka-Yoke : Improving Product Quality by Preventing Defects by Nikkan Kogyo Shimbun.