> biologically catastrophic for the human race Something equivalent in virality and lethality to smallpox could be catastrophic if you consider the geopolitica

> biologically catastrophic for the human race Something equivalent in virality and lethality to smallpox could be catastrophic if you consider the geopolitical consequences as well as the initial biological impact. A nonlinear system, like an epidemic, can have phase changes. Most epidemics don't make it very far, but we should still be nervous about that one which crosses the manifold into pandemic.