Some time ago I first read the phrase “asymmetry of passion” in an article (in Wired via Kottke) about so-called “keyword voids” in internet search engines. The article starts by discussing the internet search results for “vitamin K shots”, a routine injection that newborns get.
This is a routine practice—ask your pediatrician, your obstetrician, or the CDC. “Babies are born with very low stores of vitamin K, and without the Vitamin K shot … they do not have enough Vitamin K in their blood to form a clot,” the CDC says on its website.
But new parents who turn to search engines to understand the practice will find an aberrant—and dangerous—strain of thinking. Google “vitamin K shot” and the first result advises “Skip that Newborn Vitamin K Shot.” It isn’t until below the fold—the fourth result—that the CDC website appears.
This is blamed on an asymmetry of passion; anti-vaxxers put much more effort into writing blogs stating that the shots are unnecessary or even dangerous than government organizations like the CDC do to refute their claims. Hence the search results get populated with all-natural anti-science lies. (I just tried the search and my results page only has a single anti-vax result. The Wired article caused a number of scientifically literate websites write about the vitamin K shots.)
Asymmetries of passion happen more often. [A couple of situations where I think something like that is happening include blockchain, political videos on Youtube, and conspiracy theories.