<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/9a119ed2-0e7c-42a0-8228-071ff7f967f4/2020-04-13_18.51.19.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/9a119ed2-0e7c-42a0-8228-071ff7f967f4/2020-04-13_18.51.19.png" width="40px" /> The Spreadsheet Value Rule a cell's value relies solely on the formula the user has typed into the cell.The formula may rely on the value of other cells, but those cells are likewise restricted to user-entered data or formulas. There are no 'side effects' to calculating a formula: the only output is to display the calculated result inside its occupying cell. There is no natural mechanism for permanently modifying the contents of a cell unless the user manually modifies the cell's contents. In the context of programming languages, this yields a limited form of first-order functional programming.
— Alan Kay
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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/7aa680c4-e9e9-4f4b-945f-11247f2d1004/2020-04-12_02.43.11.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/7aa680c4-e9e9-4f4b-945f-11247f2d1004/2020-04-12_02.43.11.png" width="40px" /> VISICALC represented a new idea of a way to use a computer and a new way of thinking about the world. Where conventional programming was thought of as a sequence of steps, this new thing was no longer sequential in effect: When you made a change in one place, all other things changed instantly and automatically.
— Ted Nelson
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Spreadsheet : Its First Computerization (1961-1964)
Richard Mattessich 的《Budgeting Models and System Simulation》论文
预示了今天计算机电子表格背后的基本原则
“电子表格”来源于“传播”
