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Q&A What would modern language look like if humans also communicated via bio-luminescence?

Suppose human beings have evolved markings covering the face and hairs. The cells contain a colony of bacterium capable of producing multiple arrays of visible light. Each bacteria reacts differen...

6 answers  ·  posted 8y ago by user6760‭  ·  last activity 8y ago by user6760‭

Question evolution communication creature-design language