Your quote doesn't support your conclusions about the subject or Dennett's views on them. A lack of sight from birth results in visual cortex used for other th

Your quote doesn't support your conclusions about the subject or Dennett's views on them. A lack of sight from birth results in visual cortex used for other things. Damage to language areas can result in loss of comprehension or production, but neighboring tissue can recover the functionality. The lines we draw are fairly blurry to be honest. Dennett isn't saying that the language area makes the human but that language and narrative as a cognitive currency are what make us human; the neurobiology is incidental.