Yep, think that was the disconnect that had me struggling so badly with your suggestion. it did force me to refine my thoughts on that, though. I like the idea that the lifeboat could only travel more vaguely, so say, +/- a year or so. that allows for successful test, but not great time machine. The mothership being the improved version, they can now dial it in to a week, or a day or even exact moment. The lifeboat can home in on the mothership, allowing it to get MUCH closer to exact, but still lagging slightly behind due to San Dimas time (can find the ship in time and go to that point, but only from the elapsed time, not arrival time).
this makes more sense perhaps with how they are using the devices, and allows for a more natural engineering stroke.
this makes more sense perhaps with how they are using the devices, and allows for a more natural engineering stroke.