For a while now, I’ve been trying to work out how to best use the Temple of Reason (in Perrigor, just south of Potentia).
The idea seems to be that due to the lectures and discussions there, AdvancedSpies can learn from the scholars (i.e. gain Research Points), under certain conditions. Basically, this only works if your settlement is really ignorant (which makes sense), so, when your Advanced Spies arrive at the Temple of Reason you need to have virtually no Research Points in their settlement, and a fairly undeveloped (low level) library.
I spent a while sending Advanced Spies from different settlements, and thought that I had it figured out. It seemed that if I built a settlement in a certain way, I could prioritize a Consulate over a Library and use diplomats to generate the RPs that I needed. Cool.
So, I started sending waves of Spies from my newest city, and then… they just stopped getting Research Points. The message came back that my city was “too educated”. Presumably there is a limit to how much any one settlement can learn from the Temple.
I’m still trying to riddle this out.