There are fine bits of rationalization in many of the TOS movie novelizations - and in some of those, they don't actually weigh down the story, either! (I especially enjoyed the Klingon add-ons to ST5:TFF.)
Brilliant linguists don't seem to be a sought-after commodity in a TV show that basically only thrice acknowledges the existence of language at all: by stating that the locals speak English ("Bread and Circuses"), by noting that another Earth language besides English is being spoken (apparently natively) by one of the characters, this being a major and even unwelcome exception to norm ("Man Trap", "Changeling"), and by noting that the local primitives speak some bits of their English in a mangled form ("Omega Glory"). Perhaps Kirk should embark brilliant English majors instead?
Timo Saloniemi
Brilliant linguists don't seem to be a sought-after commodity in a TV show that basically only thrice acknowledges the existence of language at all: by stating that the locals speak English ("Bread and Circuses"), by noting that another Earth language besides English is being spoken (apparently natively) by one of the characters, this being a major and even unwelcome exception to norm ("Man Trap", "Changeling"), and by noting that the local primitives speak some bits of their English in a mangled form ("Omega Glory"). Perhaps Kirk should embark brilliant English majors instead?
Timo Saloniemi