Can AI save us from AI?

The article seems to assume that there will be one researcher or research organization producing one AI. This makes it reasonable to propose asking it a super-special question that reduces the risk.

It's more likely that armies of researchers will be competing to create quantities of ever-smarter AI's: for trading stocks, diagnosing illness, or managing enterprises. We have AI systems now which try to detect fraud--conceivably fraudsters could create AI systems to more cleverly hide fraud. Any of these efforts could lead to a "chain-reaction" of AI extension, which the author terms an explosion.