it wasnt until I read the original title and closely compared it to this one that I finally understood 4 means "for" here. Kept thinking it was a quantity or e

it wasnt until I read the original title and closely compared it to this one that I finally understood 4 means "for" here. Kept thinking it was a quantity or enumeration. Four friends? Four social hierarchies? The fourth group? Really confusing change to change the headline.