Not only do mapmakers get to choose what data to use (for example, the mapmaker of “American Migrations to 1880” claims he just took a “rough stab” at gathering data), but they can also change how the viewer interprets the data from how they present the information. For instance, by titling the “Invasion of America” map as an invasion instead of something such as “US Land Expansion,” the viewers of the map view the US’s actions in a negative light, whereas expansion would have seemed positive.
I agree. when it comes to curation you are as responsible for what you leave out as for what you put in. Implicit in the questions we ask are the assumptions we hold. Humanists can subtly frame conversations through the language they use to describe the world. It's important to acknowledge that there is no such thing as a "rough stab" as it is the curator who decides when their piece is complete.