On June 15, a newspaper columnist predicted that the coast of State X would be flooded on the following September 1. Relying on this pronouncement, Gullible quit his job and sold his property at a loss so as not to be financially ruined by the flood. When the flooding did not occur, Gullible sued the columnist in a State X court for damages. The court dismissed the case for failure to state a cause of action under applicable state law. On appeal, the State X Supreme Court upheld the lower court. Three months after this ruling, the State Y Supreme Court heard an appeal in which a lower court had ruled that a reader could sue a columnist for falsely predicting flooding.

a. Must the State Y Supreme Court follow the ruling of the State X Supreme Court as a matter of stare decisis? Please explain.