random error

When the Spanish first began exploring the Pacific Coast of North America, they mistakenly believed that California was an island. (Some of the earliest and most fascinating maps of the state depict it as separated from the mainland.) This is considered one of the greatest, albeit short-lived, cartographic errors. Early mapmakers began labeling the “island” as California, the name of a mythical island in a book …

Read more in this article about some frequently asked questions and fun facts related to our definitions.