When the east bay mini quake hit on Saturday, I recalled how the massive 10/17/89 Loma Prieta quake had a preschool on 8/8/89. Tongue in cheek I said the Saturday quake could foreshadow a major quake, but probably not, thus reflecting the squishy state of earthquake science.
Was I prescient? No. What we can say with certainty is that two earthquakes so far away from each other, on completely different fault systems, are completely unrelated. Lumping them together in the same article is journalistic malpractice
I was in Mountain View for the 6.9 Loma Preita quake in 1989. That was significant and scary, made more so since my office was in the basement. I never did consider that quake massive, though.