In the Advent tree, there is something called "Divination" that says:
Build rate increase 40%
Cost Decrease 25%
The description below reads "Scryers become more effective at searching planets allowing relics and bonuses
to be found more quickly and cheaply"

So what does this tech actually do? Does it reduce all costs and increase all build rates? Or only those tied in with planet exploration?

Another Advent tree item is "Communal Labor"
It says "Assembly drones build faster but at higher cost"

It doesn't list how much faster or at what cost.  Anybody know?