The kind of fluency needed to translate doesn't come with memetically bad "Polonia" polish (even if it's a bit of exaggeration). Especially with works that use

The kind of fluency needed to translate doesn't come with memetically bad "Polonia" polish (even if it's a bit of exaggeration). Especially with works that use polish language to its fullest (like Lem) or reference culture and events that are local (infamous example was the first Witcher game, but also Witcher novels - the english translation of the game was much, much weaker content than the polish original which requires familiarity with polish politics 2000-2007). So you need a combo of american poet, fluent polish linguist, and possibly historian and/or anthropologist. Tall order. Sometimes it can be smoothed over by adding considerable appendices (something that accompanied first releases of Harry Potter in Polish, for example, explaining untranslatable puns and reasons for translating things in specific way) but again, not a trivial thing to do.