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If the density of the universe equals the critical density, then the Universe must be ___________ (i.e., having zero curvature).
Transaction Costs
Expenses incurred when buying or selling goods and services, which may include search and information costs, bargaining costs, and enforcement costs.
Voluntary Exchange
A transaction where parties involved trade goods or services by mutual agreement, without coercion.
Mutual Gain
A situation or outcome in which all parties involved benefit or profit from the arrangement or transaction.
Potential Exchange
The possibility of trading goods, services, or other items of value between parties.
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