 According to Grimm (2017), a striking feature of these maps is that they are, as it were, “mobile” maps. That is, they are cognitive representations that by their very nature can adapt and change as the variables represented by the map take on different values. Put another way, they are “unsaturated” maps, in the sense that they are characterized in terms of unsaturated variables that can become saturated by taking on different values. What this means in terms of cognitive uptake is important, Grimm argues, because if the maps are mobile or unsaturated in this way, then the mind that aptly takes them up must itself be mobile. In particular, the mind that takes up causal maps in a way that yields understanding must be able to anticipate how varying or adjusting the value of one of the variables will lead (or fail to lead) to changes in the values of the other variables (cf. Woodward 2003).