User errors

false public emergency alert incident in 2018

Haplography (from Greek: haplo- 'single' + -graphy 'writing'), also known as lipography (from Greek: lip- from leipein 'to leave/to omit' + -graphy 'writing'), is a scribal or typographical error where a letter or group of letters that should be written twice is written once. It is not to be confused with haplology, where a phoneme is omitted to prevent two similar sounds from occurring consecutively: the former is a textual error, while the latter is a phonological process.

Dittography is the accidental, erroneous act of repeating a letter, word, phrase or combination of letters by a scribe or copyist. The term is used in the field of textual criticism, especially in critical studies of ancient or biblical literature. The opposite phenomenon, in which a copyist omits text by skipping from a word or phrase to a similar word or phrase further on, is known as haplography.

A user error is an error made by the human user of a complex system, usually a computer system, in interacting with it; sometimes used jokingly

keyboard input error in which a key next to the intended one is pressed, often causing typos like this: “exsmple”