Some search queries even google can't answer, such as the query asking for links that don't have the letter 's' in them that also contain the letter 's.' But, not being accustomed to coming up with nothing, Google's engine does something odd: it serves up porn links.
Answering a thread on Quora, a Google software engineer said, "We are working on a bug fix," indicating that it at least wasn't a deliberate behavior. It may also indicate that the engine is adequately complex that it is exhibiting certain personality traits.
The syntax for search queries with these contradictions includes examples like:
-s "s 1"
and
-3 "s 3"
As of this morning, the first query was still showing porn links, but the second had been cleaned up. This may reflect a bug fix, or an effort to at least clean up the examples being used from the original Quora posts.
No doubt the SEO kremlinologists will see this as an opportunity to learn about the mechanics of the great robot emperor's algorithm.