Minor bug: the tech for RCUs requires blue science to research, but does not require you to have first researched blue science for the tech to be available. This does not break anything AFAIK, but it was a surprise when I was blitzing through everything before blue science to find something I couldn't research.
https://steamcommunity.com/profiles/76561198052592278/screenshot/2485508916123882536/
Note here that there is no link from RCUs to blue science, and that I can research RCUs despite not having researched blue science.
https://steamcommunity.com/profiles/76561198052592278/screenshot/2485508916123882436/
Again, no link from blue science to RCUs.