The assumption that effective cartographic technique and its evaluation is based in part on some subjective artistic or aesthetic sense on the part of the cartographer and map reader is somewhat disconcerting. For example, E. Raisz claims that the effective use of lines or colors requires artistic judgment, and J. K. Wright explains that the suitability of a symbol depends on the map maker's taste and sense of harmony. Throughout the literature there are numerous similar assertions regarding the assumed subjective aesthetic and artistic content of cartography.

p. 16; as cited in: Kirk Patrick Goldsberry (2007) Real-time Traffic Maps. p. 23 - The Look of Maps (1952)