Why Do You Keep Hitting Yourself With That Hammer?

This year's permutation on the "Continuous Corn" myth is the idea that soybeans grown in a field after three or more years of corn result in bumper soybean yields. I guess they gave up pretending that "Continuous Corn" actually results in better corn yields. Still, the new rationale seems to operate along the same masochistic logic as the response to the title of this post - "because it feels so good when I stop!"