Do you think the American government and/or scientists created swine flu?

The new flu virus contains DNA from avian, swine viruses (including elements from European and Asian viruses) and human viruses. So did this curious mixture just develop naturally, out of the blue? Is it the result of inhumane farming practices, as the Humane Society of the United States has suggested, that exposes immune-compromised pigs to all sorts of animal and human feces? Well, maybe. But let's go back and look at the facts to see if any other scenario could be possible...