> The best way to avoid falling into the culture fit trap is to have an honest look at why someone doesn't match your expectations. Did they not match implicit or explicit expectations? If they're implicit, are they really a part of your company culture? If they are, why are they not explicit?

The reason many startups don't explicitly state their expectations around "culture fit" is that reasonable, ethical people would find them to be unacceptable. In some cases, these expectations are associated with criteria that companies are not legally permitted to use in making hiring decisions.