Critics of Johnson point to his central role in the Discovery Institute's carefully orchestrated campaign known as the wedge strategy. The wedge strategy, as envisioned by the Discovery Institute, is designed to leave the science establishment looking close-minded in the short term with a long-term goal being a redefinition of science that centers on the removal of methodological naturalism from the philosophy of science and the scientific method, thereby allowing for supernatural explanations to be introduced as science. Critics note that Johnson, as a principal officer of the Discovery Institute, often cites an overall plan to put the United States on a course toward the theocracy envisioned in the wedge strategy, and that the Discovery Institute as a matter of policy intentionally obfuscates its agenda. According to Johnson, "The movement we now call the wedge made its public debut at a conference of scientists and philosophers held at Southern Methodist University in March 1992."