"Most theoretical work since the proposals of Hebb (1949) and Hayek (1952) has relied upon particular forms of dependent synaptic rules in which either pre- or postsynaptic change is contingent upon closely occurring events in both neurons taking part in the synapse."

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It is important for investors to understand what they do and don't know. Learn to recognize that you cannot possibly know what is going to happen in the future, and any investment plan that is dependent on accurately forecasting where markets will be next year is doomed to failure.

— Barry Ritholtz