Remember when this was said? I still don't believe you, and I've got the last several comments of confusion as for the why
The confusion was not caused by any ambiguity in the IPA. It was caused by Madness not correctly remembering it.
The IPA doesn't just say "this sound should sort of rhyme with that sound" or "it's sort of how you say [word] but oh wait you're from [country] so forget that because you people pronounce that completely differently". Each symbol precisely defines
what you do with your mouth, lips and tongue to make the sound. Unless one of us is not a human or has some serious deformation of those parts of the anatomy, you and I can follow the IPA rules and pronounce the same symbols
exactly the same way, even if we don't share a language. Well, in theory, anyway. Sounds that just plain don't exist in one's native tongue are still hard to get right, but at least you'd
know you weren't getting it right.
If someone shows you a complex but valid mathematical proof and you don't understand it, that doesn't mean the proof (or mathematics itself) is wrong or ambiguous.
To put it another way, Gnosis beats Anagogis.
Also "the only way to avoid ambiguity" does not mean it's foolproof. Perhaps I should have said "the only way to have any chance of avoiding ambiguity". But that just demonstrates how imprecise the English language is. Quod errat fornicabitur demonstrandum.
Confucius was really onto something with that whole Rectification of Names thing...