Dunlap owned a large farm, which he worked for many years with his son, Sam. Dunlap had a daughter, Celeste, who lived in the city. Dunlap had often told Sam, Celeste, and various relatives that Sam was to inherit the farm; nevertheless, nothing was ever done to ensure that it would happen. As Dunlap aged, he became senile and difficult to live with, but in lucid moments he talked about Sam's inheriting the farm. Because Sam knew that his father had no will, Sam had a deed prepared conveying the property to himself. Dunlap signed the deed. The execution of the instrument was done properly, according to state law. Two years later Dunlap died, and Sam had the deed recorded. Celeste has sued to have the deed declared invalid. What arguments should she make? What counterarguments should Sam make?