The Korean system is, itself totally logical. You just have to use a whole new alphabet/syllable system.
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I agree - it is a very logical language (far more than English, for sure!).
My only point was that when I’m looking at a Korean letter on duolingo, say “|”, that’s pronounced EE, I could not buy into duolingo’s insistence that the pronunciation should correspond to the English letter “i” (NOT “e”), which I pronounce “eye.” I understand different letters can be pronounced different ways, and perhaps they’re using some phonetic system I’m not acquainted with - but, regardless, I didn’t care to relearn English just to learn how to speak Korean. Other people’s mileage might vary.
Duolingo seems based on European sound assignations. I have no trouble with that. English is the outlier in vowel sounds among Roman alphabet languages, the outlier that has become dominant as a world language.