Research and Science Points Guide
If your settlement keeps stalling because you do not have enough Science Points to unlock what you want next, the fix is not just “more research” — it is choosing the right research buildings for your stage of the game and feeding them properly. Start by using spare Inventors to turn idle labor into progress, then shift into Observatories once your settlement can support a stronger science industry. The real bottleneck is whether you can spare workers, space, and construction supplies without weakening the rest of your colony.
Start with spare Inventors instead of tying up your main workforce
The Inventor is the least efficient Science Points producer among the research buildings, and that matters because it means you should not treat it as your main science engine for long. Its production rate is one Science Point per hour as of Update 2, which is enough to keep research moving, but only if you are using beavers you would otherwise leave unemployed.
In the early game, that is exactly what you should do. Build spare Inventors and set their workplace priority very low so they only pick up workers after your more important jobs are covered. The Inventor is intended as a low-output research option, so use it to supplement research when you do not yet have access to higher-yield research buildings.
The Inventor is best when your colony is small, growing, or temporarily overstaffed. It gives you a slow, steady trickle of Science Points and complements the other research buildings instead of competing with them. Use it as a way to make unemployment productive, not as a reason to delay better infrastructure forever.
Decide when an Inventor is enough and when it is time to upgrade
You should think of Inventors as bridge technology. They are a good answer when you need research but you are not ready to commit to a stronger setup. They are not the building to keep stacking once your economy is stable enough to support higher-yield production.
The other buildings that produce Science Points are the Observatory and Numbercruncher. Of those, the Observatory is the clear next step when you want real throughput. Keep Inventors around as backup support, but do not keep adding low-priority Inventors if what you actually need is a faster research pipeline.
Here is the simplest way to think about it: if you are still solving survival problems, Inventors are fine. If you are already stable and trying to unlock technology faster, stop leaning on Inventors and move toward higher-yield science production.
Set up an Observatory as your main Science generator
The Observatory is the building you should aim for when you are ready to make Science Points a real production line. It functions similarly to the Inventor, but it is a high-yield science generator and a worthwhile upgrade if you are pushing scientific progression. It employs up to 4 beavers, and at full efficiency it produces 10 
Use that as your benchmark. If your settlement can reliably staff and supply an Observatory, it will outclass a pile of Inventors very quickly. That does not mean you rush it before you are ready. It means that once your basic settlement is stable, you should actively plan for Observatories instead of keeping science on a trickle.
The Observatory also fits into the books production chain, so it is not just a standalone building you throw down and forget. Build it when you are prepared to treat Science as part of your long-term economy.
Reserve space and feed the Observatory’s construction chain
Before you place an Observatory, make sure you can actually support it. The building is a 3x3 structure with a height of 4, and other buildings cannot be stacked on top of it. That means you need to reserve both horizontal space and vertical clearance.
Construction is also expensive enough that you should prepare the supply chain first. The Observatory requires 80 planks, 30 gears, and 10 pine resin to build. 
The best way to avoid that stall is to connect your Tapper's Shacks and component production to your logistics network before you start construction. Put the Observatory on flat ground with clear access for beaver travel, then make sure all three inputs are being produced steadily.
Scale science production without starving the rest of your colony
Once you have an Observatory working, do not overcommit the colony to science at the expense of everything else.
A good pattern is to keep Inventors running at very low priority as a backup while your main science comes from Observatories. That gives you a cushion if an Observatory goes understaffed or a supply line slips. If you can unlock bot workers, the Observatory can use them at a cost of 7,500 Science points, which is a strong way to reduce dependence on beaver labor. Treat that as an efficiency upgrade, not a requirement.
The practical rule is simple: expand science only as fast as the rest of your colony can support it. Keep Inventors as a low-priority trickle, add Observatories when your base can feed them, and use bots later if you want to reduce labor pressure. If you follow that order, your research stops being a bottleneck and starts becoming a growth engine.