Ole Thyssen (born November 3, 1944) is a Danish philosopher and sociologist, and Professor at the Copenhagen Business School.
Niklas Luhmann (; German: [ˈluːman]; December 8, 1927 – November 6, 1998) was a German sociologist, philosopher of social science, and a prominent thinker in systems theory, who is considered one of the most important social theorists of the 20th century.