Louis XXIV
Le Roi Soleil
Here I disagree completely: Science comes from SOME people (call them "specialists" if we want to go the civ way), not from everyone.
While that's vaguely true, it's not historically true. It wasn't a scientific specialist that invented the wheel. It was every day people who took something already in existence and improved it slightly (the wheel likely came from the Potter's Wheel). Same holds true with various pottery techniques, that were invented by people trying to make pottery easier. Plenty of people invented advances in navigation because they were sailors and looking to make their lives easier.
Even today, plenty of merchants, businessmen, etc, make innovations independent of the scientific world or they discover how to take scientific advancements and apply it in different ways.
I understand the argument about composition of tech buildings in civ5, but I'm still not sure about it's true effectiveness. The games I have played, I felt that the reward of simply having more cities (no matter the quality), ergo more pops, was far bigger than developing the cities to higher levels of tech buildings. That was my experience, and I started to think if that may be related to the current ICS dominated scenarios (apart from the already known, and to-be-nerfed exploits regarding happiness.
Actually, ICS is better for science not because of more population, but because of more libraries and scientist specialists. They didn't quite stack things properly, so it ends up being better to have lots of the little things than some of the big things.