Oh my god. This is a semantics black hole and I am NOT interested in pursuing it. You guys are derailing the thread What I see as Rationalism's competency: Science, and growth, which allows you to get a technological edge and work lots of specialists (also gives you an extra specialist) What I see as Industry's competency: Production and gold, which allows you to build lots of units and buildings faster than other people. This is very flexible, but gives few bonuses once you've built everything. What I see as Imperialism's competency: Getting you lots of land and leveraging that land. It has more boosts to tiles than any other tree It specifically boosts movement on units, which relieves pressure to have armies all over your territory It's the only tree to boost puppets It boosts monopolies (which are only attainable if you control a large amount of the requisite tiles) Wide. Tall. Short. Long. Green. Blue. Can we move on please? I would apologize for having ever accidentally brought it up, but it seems obvious you all have an axe to grind and I just don't care.