Watch out for stray strangelets! Myself, I’m not entirely convinced that there isn’t a more plausible explanation for these isolated events. Think about it: the entire methodology is centered around finding earthquakes in different parts of the world, close to each other on the time scale; and then calling the earlier earthquake a strangelet’s “entry” point, and the later earthquake the strangelet’s “exit” point. Couldn’t it be just the mere coincidence of earthquakes happening at near simultaneous points in time?