Stress sharing is a simple, robust mechanism for enabling emergent collective problem-solving without explicit altruism.

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• Stress-sharing enables collective problem-solving without explicit altruismhypothesis0.909
• Stress sharing is an easy way to achieve robustness in collectives made up of homeostatic subunits.claim0.892
  Generalization of the model's implications.
• Stress sharing serves as a 'cognitive glue' for collective intelligences, enabling cooperation without explicit altruism by de-localizing incentive to work toward group goalsclaim0.877
• Stress sharing works to increase cohesiveness of collectives by raising exploratory plasticity in neighboring cells, enabling long-distance cell influencehypothesis0.853
• Stress sharing will be favored by evolutionary processes.hypothesis0.852
  Evolutionary fitness hypothesis tested in the GA.
• Stress-sharing advantage increases with problem complexityfinding0.832
• Stress sharing improves morphogenetic efficiency of multicellular collectives.claim0.830
  Central interpretive claim supported by multiple findings.
• Stress Sharingconcept0.830
  Core concept: the hypothesis that cells can leak or export stress signals to neighbors, enabling collective coordination toward morphogenetic goals without explicit altruism.