Talk:Blender/@comment-45009083-20200208071130/@comment-38109392-20200208084926

Go see Petra while she's in the Research Center and pick the Research social interaction, then choose the "Give 5 Data Discs" option. You're not guaranteed to get it, but if you keep giving her 5 discs, eventually you'll get the diagram you need. You can give her more Data Discs after the initial 5 discs to get the diagram sooner, but it's not necessary to do so.

There's a list of all the diagrams you can get and how long they each take on the Research Center page; the 5 disc tier is called "Baseline research I" in the table.