Would it really work? Let us assume that all issues with technology are resolved. The ship is perfectly hermetic and recycling of consumable goods is so efficient that loss is acceptable given the length expected of the journey. Would humans survive? For those not familiar with the science fiction staple of the generation ship, this is a space ship where the ship is usually very large, and the crew is equally large, and it is understood that the speed of the ship will not be sufficient to get the original crew to the end destination. Instead, it is understood that it will be the children, or the children of the children of the original crew that will be the ones to actually see the end destination grow large in the viewport. I am watching a show on the concept of cities and they have mentioned the city of Brasilia. I am fascinated by this city. It is the first truly pre-planned, completely planned city, and as architecturally beautiful as it is, it is a city flawed by the idea of human need instead of catering to the actuality of human need. A generation ship would be, in effect, an enclosed city, given that people would be expected to live their entire lives within. In order for it to function, it would have to be the most pre-planned environment ever. Do you think it would work?