^You're still not getting my point. Some things are random. That means they are by definition impossible to predict. Ultimate knowledge of a particular science does not give you the ability to predict the future perfectly. On the contrary, the more we learn about the universe, the more we understand how impossible perfect prediction is. Modern quantum physics gives us a far more advanced knowledge of the universe than Isaac Newton had, but while Newton believe the universe was perfectly deterministic and its future could be exactly predicted with enough information, our far greater knowledge tells us that it's impossible due to quantum indeterminacy, chaos theory, and the like. The more you know about the universe, the more you become aware of its mechanisms for uncertainty, chaos, and randomness. So a more enlightened science would be less likely to contain simple "This will happen at X time" predictions than a less enlightened science that's less aware of the uncertainties involved. A more enlightened science will be able to give a more informed estimate of the uncertainty around the peak of the bell curve.
Only the ignorant assume they can know everything. A fundamental part of wisdom is recognizing the limits to your knowledge.
You're right. You win. It was a stupid way for JMS to handle it.
Now then, since you're a writer, how would you have handled it? In the same amount of time that JMS took, keeping all other elements the same, how would you have done it? No fair cutting anything else, assume it's all critical.
Perhaps it was worth a quick handwave for the sake of the story being told? IMO it was, because the show wasn't about the tech, it was about the people.
Jan