Modern psychology, education, technology, and global development are built on the narrow assumptions of WEIRD societies—Western, Educated, Industrialized, Rich, and Democratic—which represent only a small fraction of humanity but dominate the models used to define what it means to think, learn, cooperate, and lead. This article critically exposes how these frameworks erase cognitive diversity, marginalize indigenous wisdom, and often fail when exported across cultures. It calls for a radical shift toward cognitive pluralism: recognizing that human minds are shaped by kinship, spirituality, oral traditions, ecological knowledge, and relational ethics. To create resilient, just, and meaningful systems for the future, we must dismantle the illusion of universality, design institutions with cultural humility, and embrace the full spectrum of human ways of knowing, feeling, and flourishing.