Efficient (in EMH) usually refers to inability to predict sign/magnitude of the prediction error.
For omniscient being answer to any prediction question is either 0 or 100. For rest of us—no so much.
See hydrogen examle in An equilibrium of no free energy
Efficient (in EMH) usually refers to inability to predict sign/magnitude of the prediction error.
For omniscient being answer to any prediction question is either 0 or 100. For rest of us—no so much.
See hydrogen examle in An equilibrium of no free energy