Having recently read Daryn Lehoux’s wonderful book, What Did the Romans Know? (University of Chicago Press, 2012), I was led to revisit and reconsider a post from some time ago on Latour’s concept of factish. The term factish is a neologism Latour uses to combine ideas that are widely thought to be contradictory – namely, a fact and a fetish. The former refers to a reality that is independent of those who may come to discover facts; the latter is a human construction and is a projection onto objects of our desires, wishes, and hopes. Facts thus correspond to a reality that is what it is regardless of what we think about it; fetishes correspond to realities that are what they are solely because of what we think about them. A factish points to a central claim of Latour’s, and it was this claim that was the subject of the earlier post: namely, to be constructed and to be autonomous are synonymous; or, the more constructed the object, the more real and autonomous it is. This gradation of being more or less constructed, or more or less real, is captured by yet another term of Latour’s – relative existence. Lehoux’s book has reminded me of the importance of this theme.