You cannot predict future markets by extrapolating current sales or even by surveying intended purchases by current buyers.

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You cannot predict where and when these items will appear, but they can dramatically swing things in the favor of whichever team is lucky enough to be near them.

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Even if you cannot predict what will happen, with each new experience you will learn about a new type of client, a new personality (or personality disorder), and a new way of negotiating.

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And I'd be the first to tell you I cannot predict every twist and turn in that track.

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Sightings are notoriously difficult to predict and cannot be guaranteed, but if you want to chase the elusive lights, right now is the best time to head up north.

CNN: Chasing the elusive Northern Lights by boat