KNOWLEDGE DIFFUSION: Who is an expert?

"New digital technologies and social media are combining with pressures and opportunities to increase the accessibility and transparency of ‘expert’ knowledge production, within academia, mass media and policy. These developments, which are often contested, are challenging assumptions about where useful knowledge is located, how it is translated and employed and who constitutes an ‘expert’."
http://blogs.lse.ac.uk/impactofsocialsciences/2014/05/27/politics-of-knowledge-book-series/ 

PS Expert!