Back to the main thread, "Space Seed" is a little lame when you consider it was 1960s television trying to guess the future using some of our real-life history as a backdrop, but it was also being way too kind on the actual numbers - both in terms of genetic experimentation AND the date for the next world war starting. Other plot themes sorta hold up, some more than others, and some less. Some of this can be mitigated by accepting that Star Trek is not in our universe, which it isn't. It's its own. As the universe grows lager then more opportunities (and nitpicks) can potentially arise. Then add parallel dimensions and voila.