In any sort of reality, the lifeboat HAS to be capable of independent travel, because it was the prototype, so has to actually do something. Else, what would they have used as the basis for building the mothership?
Time travel is a big, complicated achievement. There are multiple different scientific breakthroughs that would have to be achieved and combined in order to make time travel practical. You'd have to invent a way to generate a spacetime warp. You'd have to invent exotic matter or some surrogate for it in order to stabilize the warp. You'd have to invent a way to shape the warp into a wormhole. You'd have to invent a way to displace one end of the wormhole in time. You'd have to invent a way to scan the past so you could direct the wormhole to a particular place and time. Every single one of these would be a revolutionary breakthrough in itself, and they'd probably come years or decades apart.
So it actually makes perfect sense that they'd have to invent it incrementally -- that they'd come up with things that could just do
part of it before they managed to put all the individual achievements together and build something that could do
all of it at once. See my example of the Wright flyer. Or the current prototypes for self-driving cars that have been getting incrementally closer to pulling it off but aren't quite there yet.
But yeah, the bad guy can't seem to figure out that he has infinite tries, it's kinda annoying.
Well, not infinite. Even with the plutonium battery, the mothership's power supply is still finite.
And it's Random Historical Figure of the Week instead of any sort of logic. If your plan fell apart in Colonial times, why show up in 1890s for your next try? Why give them 100 years to organize when you can still get them before they get started?
I figure the same reason that guided the Legends' search for Vandal Savage in
Legends of Tomorrow's first season: Because of incomplete historical records, there are only certain points in history where they know their quarry can be found. We know that Flynn's knowledge of the past is limited; he didn't know about David Rittenhouse until he stole the key from Bonnie and Clyde and read the letter it led him to. He's mainly going from Future Lucy's journal and whatever other historical evidence he's able to piece together.
After all, we are talking about a conspiracy that's somehow managed to keep its very existence secret for 250 years. It's not like Flynn can be expected to have complete knowledge of every Rittenhouse member. He chose the 1893 Exhibition because it was a point in time where he knew that three key Rittenhouse members would be together, which would let him strike a major blow. He'd been hoping he could erase the organization in one stroke with David Rittenhouse, and he's frustrated that he has to do it one person at a time. So he'd naturally gravitate to a point where he had a chance to take out three major members in one stroke and thus hopefully get it over with quicker.
Maybe he's the only genius that could create it, but once you've had a whole company working on building it, seems they could do so again. No mention of any rare item that prevents it from being created again, or lucky lightning strike that give it magical power. Need Goddard for a rocket, but NASA can build more once they help build the first one...
Well, exotic matter would probably be very difficult to manufacture and store in large quantities. It could've taken them years to make enough for two craft. Of course, they haven't mentioned needing exotic matter.
Didn't
Seven Days say their time capsule was reverse-engineered from alien tech from the so-called Roswell crash, so it was the only one of its kind? (Although I think they did have a backup.)
True but I am sure you will agree that the rules should make sense and be consistent.
Yes, and this show has done a poor job laying out its ground rules coherently, so we're left to fill in the gaps with speculation.
I was thinking of a time machine like the Delorean in Back to the Future where the person can input a precise date and time and go there. In that type of time machine, how much time you wait before making your trip should not matter. But it would seem that the lifeboat and the Mothership work differently.
The mothership does work that way, but the lifeboat doesn't. The mothership can go to a chosen point in the past, but the lifeboat can only follow it to the same place and time, like a dog on a retractable leash.