Page "Social constructionism" Paragraph 40

Finally, against the strong theory and for the weak theory, Searle insists, " it could not be the case, as some have maintained, that all facts are institutional social facts, that there are no brute facts, because the structure of institutional facts reveals that they are logically dependent on brute facts.

To suppose that all facts are institutional social would produce an infinite regress or circularity in the account of institutional facts.

In order that some facts are institutional, there must be other facts that are brute physical, biological, natural.

This is the consequence of the logical structure of institutional facts.