Philosophy Discussion Question - Descartes

Descartes argues that there is no way you could tell that your ideas about the external world were correct unless there were a nondeceptive God to guarantee their basic rightness. Can you think of any way you might be able to know there is a world corresponding to your ideas? Try to construct a view that provides this reassurance without depending on God. 

Please provide a paragraph (a few sentences) regarding the topic above.