I now officially feel old: "For more than two decades, the floppy disk was the primary external writable storage device used. Most computing environments before the 1990s were non-networked and floppy disks were the primary means of transferring data between computers, a method known informally as sneakernet. Unlike hard disks, floppy disks are handled and seen; even a novice user can identify a floppy disk. Because of these factors, a picture of a 3 1⁄2" floppy disk has become an interface metaphor for saving data. The floppy disk symbol is still used by software on user interface elements related to saving files, such as the release of Microsoft Office 2010, even though such disks are largely obsolete."