The mysterious Olmec civilization of Mexico has long been a favorite topic for those who believe that the original founders crossed the ocean to America centuries before Columbus (for convenience I shall call these people diffusionists, their opponents non-diffusionists). Most professional scholars (non-diffusionists) date the Olmecs roughly from about 1500 B.C., when the main sites began to be built, to 400/200 B.C. The influence of the Olmecs on the religion, art, and architecture of Mesoamerican civilization is well established. However, when it comes to the question of origins the proliferation of theories staggers the imagination.






