After being a hardcore TOS fan for over 30 years, just recently observed that Kirk's opening monologue has a nuanced difference in delivery between Season 1 and Season 3. I always thought the monologue was recorded once during production of "Dagger of the Mind." Listen to Season 1 and you will hear "civilizations" and Seasons 2-3 "civil-I-zations" Anyone else observe this over the years?