John Vachon Watchers October 1938 Cincinnati, Ohio. "Watching the sesquicentennial parade go by" In the fields of economics and logic, there are basically two types of knowledge that can be communicated between people. The first one is usually through the use of indirect speech: 1) Individual Knowledge – X knows fact A and Y knows fact A, but neither necessarily know anything about the state of each others' knowledge. e.g., X asks her dinner date, Y, if he
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