The game is designed for every new opening content, you do something and get experience, experience opens you new levels. Needless to say, if you've played 100 game days and haven't done some important scene (like getting stuck in the wall), you won't have enough experience to unlock the next new quests. And yes, in that case you will see the same scenes.
I can assure you that if you read the tasks from Stukov and do everything the right way, you won't have any problems with repeating tasks.