Sure, integration is usually the hard part, but that's engineering for ya'. The point is that there's no new science at play. In other words, this is less like

Sure, integration is usually the hard part, but that's engineering for ya'. The point is that there's no new science at play. In other words, this is less like going from horse-and-buggy to the moon, and more like going from the Model T to F1. Edit: Though it's worth noting that both those transitions were achieved in less time than since the original NYC pneumatic tubes and now.