Why Descartes had doubts about his Meditations

      What does Descartes have doubts about in his Meditations? What reasons does he offer for having those doubts? How does he try to resolve those doubts? Is he successful? What would Davidson and Spinoza say about those doubts? Critically and in detail develop Descartes views and critically develop the views of Davidson and Spinoza in sufficient detail to exhibit with clarity their differences with, and criticisms of Descartes. How do you think Descartes might criticize them. Who do you think is right?