sorry, to be clear --- it is. But when you get a eureka, the pop-up window says you got one, but doesn't tell you why you got it, i.e., what action you took that triggered it. You can figure out how to get a eureka by mousing over something in the tree or mousing over the civic you're researching but when you get the eureka, there's not a quick thing that tells you exaclty why.
It's just something small that has been nagging at me during every lets play