= Edward Norton Lorenz
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<Edward Norton Lorenz> showed how a deterministic low-dimensional model of convection can produce bounded, nonperiodic evolution with strong sensitivity to its initial state. His 1963 paper became a central example of <chaos>: the equations determine a trajectory, while finite initial precision can still limit long-time prediction.
The model retains three coupled variables from a simplified convection description rather than attempting to simulate the entire atmosphere. This distinction matters: the result demonstrates a mechanism of unpredictability without making every weather pattern random or every forecast impossible.<Deterministic Nonperiodic Flow by Edward Norton Lorenz>[1963 convection model, numerical trajectories and predictability discussion]{ref}
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