W.A.G.

• 1) Non-local Coulomb collisions in the Earth's ionosphere are thought to put tails on upflowing ions.

• 2) Equivalently, large changes in collision frequency are temporally correlated as plasma leaves Sun.

• 3) Fluctuations in energy are log-normal distributed, suggesting a pdf already far from Gaussian.

• 4) Coulomb cross-section decreases with energy, so that E-field "runaway" modifies the power law of the P, the step size between collisions (and energy gain).

• 5) "Sticky vortices" in Poincaré plots-Hamiltonian chaos.