This is an open access special issue licensed under the Creative Commons BY-NC-ND License. Journal of Artificial General Intelligence Special Issue “On Defining Artificial Intelligence” —Commentaries and Author’s Response Volume 11, Issue 2 February 2020 DOI: 10.2478/jagi-2020-0003 Editors: Dagmar Monett, Colin W. P. Lewis, and Kristinn R. Th´orisson