Possessing specialized knowledge and skills.

The Death of Expertise: The Campaign Against Established Knowledge and Why it Matters is a 2017 nonfiction book by Tom Nichols.

part of a more complex classification of expertise developed by Harry Collins and Robert Evans (both based at Cardiff University).Collins, H.M. and Evans, R.J. ‘The Third Wave of Science Studies: Studies of Expertise and Experience’, Social Studies of Sciences, Vol.