The evolution of larger brains has had a uniquely important role in the ideas about human origins, But Homo naledi violates this idea. Homo naledi was similar to modern humans in its tooth sizes, and had substantially smaller molar teeth than species like Homo habilis or even African Homo erectus. Large brains use a lot of energy, and they take a long time to grow and develop. Anthropologists long assumed that early humans met such costs by expanding their niche, to use a broader and broader array of resources. Any hominids that lacked intellectual and technological abilities could not have survived long, in the same geographic range as larger- brained humans.

Moreover, Scientists have suggested that larger-brained hominids were able to find and eat more high-quality foods, prompting the evolution of smaller teeth. Anthropologists have also suggested that processing foods, using tools and fire, caused the human lineage to evolve smaller teeth. Therefore, The underlying idea is that smarter hominins found ways to sustain themselves that substituted cleverness and food processing for tooth wear, so that larger brains and smaller teeth came to be related to each other.

CHAPTERS:
0:00 INTRODUCTION
2:35 HOMO NALEDI EXTINCTION
6:12 COMPETITIVE EXCLUSION
9:25 HOMO NALEDI FAMILY TREE
14:40 HOMO NALEDI SPECIES

Sources for your reading and fact checking pleasure!

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