Just wondering how economy really works. There are certain improvements that are supposed to increase economy by a certain percent. However, it seems that I can build a whole bunch of these, but I barely see any increase revenue.

One thing that always puzzled me about Gal Civ is that I couldn't figure out exactly how income, approval rating, science points and production points are calculated. Don't get me wrong, I love this game. But for example, I really liked how in Civ III I could calculate for myself what my income etc would be because the rules were very strait forward.