"If an exchange between two parties is voluntary, it will not take place
unless both believe they will benefit from it. Most economic fallacies
derive from the neglect of this simple insight, from the tendency to assume
that there is a fixed pie, that one party can gain only at the expense of
another."
- Milton Friedman
 | Expensive food for purchase at the top of the tower. |  |
       
       
       
       
       
       
       
       
       
       
       
       
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