Several threads I have read have distinguished between COMMERCE and GOLD. I noticed in reading the Improvements guide here that there also seems to be a difference between SCIENCE and RESEARCH. Can someone explain these differences, and perhaps specifically: Does a specialist's contribution get mulitplied by building bonuses? How does a Shrine's income get multiplied, if at all? How does trade get multiplied? Can a merchant super-specialist's contribution get applied (and multiplied) to research, culture, commerce? Basically, if something (a specialist, a trade route, a shrine, etc) generates gold, does that gold then get multiplied as "science" or "commerce," depending on your slider, or is it "raw" or can ONLY be applied to one or the other? Is science different than research, or was that just used interchangably in the building guide?