Quick Answer
Connect the ceiling point to the other point with your upgraded tool, then have your partner try the control. It is not a repeat of your first visit: the button does nothing until those two points are joined. This We Were Here Tomorrow Research and Development puzzle happens on your return visit, after you collect the upgraded tools. Once the connection works, go to the lever to open the door.
When you return to the familiar room and find a connection point overhead, the Research and Development return visit circuit, Research and Development upgraded slime connection, and Research and Development ceiling power contact all describe this same puzzle.
How Do You Solve Research and Development on the Return Visit?
Collect your upgraded tools, connect the overhead point to the other point with the new connection function, and have your partner try the associated control before moving to the exit lever. This puzzle takes place when you return to Research and Development, with new tool functions available in the familiar room.
Pick up the upgraded tools first. The room looks the same, and it's easy to feel like you're stuck in a loop, but don't repeat what you did last time. Your connection tool now has another function, and your platform tool can place two platforms. That's what gets you to the connection above you and up to the higher spots.
Why Does the Research and Development Return Visit Circuit Have Different Names?
The three names describe different features of the same return visit puzzle: the familiar room, the upgraded connection function, and the point on the ceiling.
- Research and Development return visit circuit: You have come back to Research and Development and need to connect two separated points. The familiar setting can make this feel like a loop, but the upgraded tools change what you can do here.
- Research and Development upgraded slime connection: This describes the new tool function used to join the two points. Treat it as a description of the action you need, rather than looking for a separate puzzle with that name.
- Research and Development ceiling power contact: This focuses on the overhead connection point. Looking only at the controls within easy reach leaves out the other end of the connection.
This is the return visit connection puzzle. If you are working on the earlier Research and Development component sockets, follow the Component Sockets solution for that mechanism.
How Do the Upgraded Tools Work Here?
The connection tool can join two points, while the upgraded platform tool lets you place two platforms and build upward.
| Tool | Upgraded function |
|---|---|
| Connection tool | Joining two separated points |
| Platform tool | Placing two platforms |
Use the platforms to get height. You can place a second one and stack upward, so don't treat the tool as one platform that has to do everything.
For the connection, think about both ends. One point is on the ceiling, so look up, not just around the control. Firing the tool at one spot does nothing useful on its own. What you need is a link between the two points.
The upgraded tool linking a block to the contact on the ceiling. That link is what makes the button work.
How Do You Connect the Ceiling Power Contact and Open the Door?
Join the ceiling point to the other point first, then let your partner try the control and proceed to the lever after the connection succeeds.
Collect the upgraded tools
Pick up your tools on the return visit. Try their new functions before assuming they behave exactly as they did earlier. Both players have a change to work with: the connection ability and the second platform.
Reach the higher position
Use the platform tool's two platforms to build upward. Place the second platform when one alone does not get you high enough. This lets you approach the higher part of the room using the upgrade you have just received.
Find both connection points
Look overhead for the ceiling point, then identify the other point to join it to. Tell your partner which two points you are working with so they can distinguish the connection from the control they will operate.
Use the upgraded connection function
Connect those two points with the upgraded tool. If you have only left a single object at one location, try the new connection behavior rather than repeating the same single target action.
Try the control, then use the lever
Have your partner try the associated control after you make the connection. Once the two points are connected successfully, move to the lever and open the door.
If pressing the button seems to do nothing, return your attention to the two connection points. Some players tried the button without getting a useful result before discovering how to join the points with the upgraded tool.
With the door open, continue to the next puzzle, H25A symbol synthesis.
FAQ
Join the two separated points using your upgraded connection function, then ask your partner to try the associated control. After the connection succeeds, use the exit lever.
Use the new function to connect two points, including the overhead one. Repeating the earlier single target behavior misses the upgrade needed for this puzzle.
Connect the point on the ceiling to the other point with your upgraded tool. Use the platform tool's two platforms to gain height where needed, then have your partner try the control.