- Campbell, D. T., 1960, Blind variation and selective retention in creative thought as in other knowledge processes;
- Campbell, D. T., 1974, Evolutionary epistemology.
These papers are both in Evolutionary epistemology, rationality, and the sociology of knowledge - a book by Gerard Radnitzky, William Warren Bartley and Karl Raimund Popper.
Donald T. Campbell is known as the father of evolutionary epistemology.
He came up with the idea of Blind Variation and Selective Retention.
The issue of the significance and applicability of this concept is probably one of the more challenging issues for those attempting to understand cultural evolution.
These papers are tough going on the reader - but they do have significant historical importance.