I liked the earlier seasons of this show, it gave you a feeling of exactly what would happen to the human race if such a pandemic did break out. It makes sense - once the panic subsided, people would group together for their own protection. Leaders would emerge, society would start to rebuild itself. Regretfully, the later episodes started placing too much emphasis on science fiction. I mean, think of it. Virtual reality to the infinite power? Zapper ray guns? Come on. It would have been better not to introduce the technos but instead concentrate on the developing communities in the city. I noticed another problem - too many characters seemed to disappear too quickly. I heard a rumor that there were problems on the set with egos. Little children, behave yourselves!!!