I would go further to IRstuff's ideas and say that:
- The written process is NEVER perfect , being permanently PERFECTIBLE.Therefore, is QUESTIONABLE.
- trying to follow it does not, necessarily, mean that you succeed.
- If a client asks you if you are ISO certified, try to avoid him. He knows only rumours about it, and will give you more headache then worth the orders you'll get. Only if he will go deeper into details you must consider him.