Earlier quoted context omitted.
> sounds manipulative to me Amusingly, "would you only eat the food that you buy" was a suggestion by another person for a less manipulative suggestion. What most people took issue with wasn't the "only eat what you buy" part, but the "would you be willing to ?" part, which many people took as forcing the other party to answer "yes". Again, if you're coming from the preconception that someone (normally the other pers…
Thinking about it a bit more, I prefer "did you eat my food"? That way you are not accusing someone, after all maybe they didn't. To me the issue of asking "would you" sounds like the request is optional and they can say, "no I won't". In this case there is no negotiating.
If the answer is no, then like I said, negotiation probably won't work, so you escalate. The point of something like NVC is to avoid escalation when possible. Sometimes it isn't possible.
Another way of putting this is: NVC assumes good intent. When that assumption is invalidated, other strategies are superior, but you lose very little by assuming good intent for a while.