Given concerns about the appropriateness of the term disorder,many sources prefer to use the word "autism" without any additional words, on the basis that this is the least controversial term among people with different perspectives or (in the United Kingdom) autism spectrum conditions (ASC)rather than ASD. While psychiatry traditionally classifies autism as a neurodevelopmental disorder, many autistic people, most autistic advocates and a rapidly increasing number of researchers see autism as part of neurodiversity, the natural diversity in human thinking, and experience, with strengths, differences, and weaknesses. On this view, promoted by the autism rights movement, autism is not pathological, but this does not preclude autistic individuals from being disabled and potentially having high support needs due to co-occurring conditions and lack of person-environment fit. This relatively positive and holistic view of autism has led to a certain degree of friction between autistic individuals, advocates, charities, researchers and practitioners.