Cartography doesn't account for the fourth dimension that philosophy exists in. — Posty McPostface
But cartography isn't constrained to any particular number of dimensional degrees at all; consider Minard's famous map of Napoleon's campaign in Russia:
It contains at least six points of data: number of troops; distance; temperature; latitude and longitude; direction of travel; and location relative to specific dates. Modern, interactive, digital maps can contain even orders of magnitude larger points of data: in most cases the problem is not to add dimensions, but to
cull them in order to be rendered legible in the face of data overload. Philosophical cartography, is at once both easier and harder than this: easier because operates largely in the largely dimensionless world of words (and so perhaps should be called philosophical carto
logy) which makes it infinitely more malleable, and harder precisely because it is no longer constrained by the graphic and thus much harder to follow. Books - and not just philosophical books - are all maps in their own way; philosophy's distinction is in dealing with the terrain of concepts and of sense. Philosophy plots concepts as maps plot terrain or time.
In fact, picking up on the Wittgenstein thread, one could say that the constraints that function in a philosophical cartologly replace the graphic with the grammatical: to construct a philosophy is to construct a grammar, to the degree that "grammar tells what kind of object anything is" (PI §373); a philosophical map maps the world according to the grammar that it develops, highlighting
these relations over
those ones, allowing
these moves of conceptual translation while disallowing others. If "essence is expressed by grammar" (PI §371), then philosophy's capturing of essences takes place by way of grammar (elsewhere Witty will speak of how "a drop of grammar" can "condense a whole cloud of philosophy" (PI §315)). And just as maps have their own grammar - the grammar of a heat map will differ from the grammar of a river map - so do different philosophies have grammars specific to them.
Thus - for example - the (concept of) Ideas of Plato will differ from the Ideas of Kant will differ from the Ideas of Deleuze: each has a grammar distinct to its 'language-game', locating the 'joints of the world' differently each time, and articulating the world according to the grammar specific to the philosophy (in the original sense of the word the Greek
arthron: to join, and hence articulate, both world and word). These maps - these philosophies - each paint the world in a different light, bringing to light
these features or
those features, being more or less relevant, more or less significant, depending on the context of a particular investigation.