Says come to where his resources such as time attention and when you're limited they must choose how to best allocate them by making trade-offs the concept of trade-offs due to scarcity is formalized by the concept of opportunity cost the opportunity cost of a choice is the value of the best alternative forgone
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A good advancement would be a portable radio. They have made life easier for people who are walking/hiking and are looking for something such as the weather for the night or the score for a sports game.
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<h3> Agriculture was the key ... Some overarching themes include risk management and adjustment (including ...</h3>
