For critical realists, there is one historical past but many theories about it, some of which may be wrong, including some past theories. But for Latour, history itself is also composed of assemblages. A given year in the past, for example, “should be defined along two axes, not only one”— one axis identifying the year to which we are referring and the other the year from which we are referring to it, the year in which our sense of the original year is located. “In this second dimension there is also a portion of what hap- pened in 1864 that is produced after 1864 and made retrospectively part of the ensemble that forms, from then on, the sum of what happened in the year 1864” (Latour 1999c, 172). We find a similar argument in Law’s discussion of the outbreak of foot and mouth disease in England in 2001. A later govern- ment report on the outbreak, he says, “helps to enact one kind of foot and mouth 2001 . . . it helps to make the reality of the past” (Law 2009).