The birth of infrahumanization is linked to essentialism. Ingroups were said to be the only ones with a full human essence. It was meant that ingroups were paragons of humanity. Almost like the Holy Spirit, essence has different definitions and can only be approached indirectly. The present paper insists on the fundamental (essential) differences between groups. It is proposed that if differences change, the groups (their essences) are seen as transformed. The second part of the paper looks for what makes differences crucial or essential. Variables are examined or proposed in terms of sufficiency and necessity. ‘Which outgroups are infrahumanized’ will remain an unsolved problem until sufficient and necessary conditions are discovered.
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