Answer: "phonetic" is an alphabetical representation of the word
phonetic.There could be a phonetic representation of the word
phonetic as /fəˈnetɪk/.The users of the language English have
agreed upon the spelling system they have today.However
unscientific, fraught with bizarre rules it might be, it is part of
the agreement of the users of that language. The same should apply
roughly to all spelling systems. Yes, including devnagari spelling
systems as well. No spelling system can be expected to be faithful
to the exact pronunciations. That is how the facts are.