@EricB While your solution to Venice does seem to work, it still seems quite a bit a roundabout way of doing it. I'd prefer solving the problem (puppets science) itself or maybe add a single variable (extra capital science per era?) than adding many smaller buffs to terrain. I do like the later National Wonders, though it does detract options from the player (worth it). My first (and probably only) question to you regarding the Rationalism policy tree would be "What if wide empires take it, f.e. the food on farms?". I'd keep a few more effects though, but this really should belong in the policy thread!