[GnarlinBrando]

That's just being difficult. The real world does work that way. Take poltical labels for example, liberal, conservative, et al have totally different meanings for different people. Contradictions do exist, just externalizing them in a formal system is lazy.

[dllthomas]

I don't think linguistic ambiguity - while clearly something that exists - is the same thing as what is under discussion in this post.

[shawndumas]

Not trying to be difficult; just pointing out that language cannot work apart from PNC.