Imagine the Supreme Court issuing an emergency order that signals interest in departing from precedent, as if foreshadowing a change in the law. Seeing this, should the lower courts start ruling in ways that also anticipate the law of the future? They need not do so in their merits rulings. That much is clear. Such a signal does not create new binding precedent. Rather, it reflects the Justices’ guess about the future of the law—and what if...