Law Commons^™

Free Speech And Justified True Belief, Joseph Blocher

Faculty Scholarship

Law often prioritizes justified true beliefs. Evidence, even if probative and correct, must have a proper foundation. Expert witness testimony must be the product of reliable principles and methods. Prosecutors are not permitted to trick juries into convicting a defendant, even if that defendant is truly guilty. Judges’ reasons, and not just the correctness of their holdings, are the engines of precedent. Lawyers are, in short, familiar with the notion that one must be right for the right reasons.

And yet the standard epistemic theory of the First Amendment—that the marketplace of ideas is the “best test of truth”—has generally …