About Deaf-Blindness > What is Deaf-Blindness. Deaf-blindness is a low incidence disability and within this very small group of children there is great variability. Many children who are deaf-blind have some usable vision and/or hearing. The majority of children who are deaf-blind also have additional physical, medical and/or cognitive problems.
Introduction-David Hume. The Philosopher David Hume is famous for making us realize that until we know the Necessary Connection / cause of things then all human knowledge is uncertain, merely a habit of thinking based upon repeated observation (induction), and which depends upon the future being like the past.
Epistemologists: 2 schools of thought. 1. Rationalists.  Trust in a priori reason and introspection.  Distrust the senses or sensory knowledge.  Some ideas (the most reliable) are innate, born in us. Ex: Plato, Anselm and Descartes. Continental Rationalists: 3 prominent rationalists at the time.