Processability Theory is now a mature theory of grammatical development of learners' interlanguage. This linguistic phenomenon, interlanguage fossilization, can occur despite all reasonable attempts at learning. The Miami accent is a native dialect of English, not learner English or interlanguage. An interlanguage is an emerging language system in the mind of a second-language learner. These two characteristics of an interlanguage result in the system's unique linguistic organization. An interlanguage is idiosyncratically based on the learners' experiences with the L2. This interlanguage gradually develops as learners are exposed to the targeted language. On 23 September 2013, interlanguage links went live on Wikimedia Commons. An interlanguage can fossilize, or cease developing, in any of its developmental stages. Selinker named this interim language system an "interlanguage". She suggested the reconsideration of the Interlanguage. Spontaneous conversation is more likely to involve the use of interlanguage. During the war years, proponents of a naturalistic interlanguage won out. To explain this kind of systematic error, the idea of the "interlanguage" was developed. Initially, Wikidata was a self-contained repository of interlanguage links.