Some commonly known examples include:  1) Anna - (born in 1932)  Anna from Pennsylvania, was raised in private due to illegitimacy. Kept hidden and trapped in an attic, malnourished and unable to move, till she was rescued at six years old. This resulted in her lack of language ability. Once rescued, Anna received linguistic input and showed aptitude for understanding instructions but ultimately never acquired speaking. 2) Genie - (born in 1957)  Genie remains one of the most prominent examples of linguistically isolated children ever studied. Only rescued at 13 years of age, Genie was inadequately exposed to language input and demonstrated no language ability upon rescue. Yet with linguistic input that came from her social circles then, Genie gradually acquired communication, albeit neither fluent nor smooth. 3) Victor of Aveyron - (born in 1788)  Victor was one of the earliest feral children studied. Rescued at 12, he ran away from civilisation eight times and his case was eventually undertaken by a young medical student who tried to train him to communicate. Victor showed impressive progress with reading and comprehension of simple words. However, he never progressed beyond a rudimentary level. A key consideration when it comes to traditional transmission and why it is a significant milestone in language acquisition is its influence on language learning patterns. Traditional transmission denotes naturally that learning is acquired through social interactions and built upon by teaching and enforcement. This influences research when it comes to language learning patterns, impacting our understanding of the human cognition as well as language structure. Compellingly, it also determines the direction of how language should be taught and passed down. From the standpoint of traditional transmission where language manifests as a socially learned, culturally transmitted system, language acquisition is mechanical and is directly affected by the present environment the individual is placed in. This removes the premise of language acquisition from that of a biological construct. Instead of having to biologically explain traditional transmission, it introduces the possibility that the design features of language itself stem from traditional transmission. Of course, for the above to be significant, it means that languages engage in cultural selection for learnability where an assumption of innateness is inconsequential and languages adapt over time due to a need for survival. The above plays a major role in the study of languages, especially in their properties, structure and how it developed with time or throughout human history to be the system it is today; providing valuable insights into language and the human race, language and the human cognition as well as language and its path to survival. Traditional transmission as a design feature is also significant in that it purports that while some aspects of language could possibly be inborn, the human race crucially acquire their language ability from other speakers.