You can sometimes predict complexity based on speculative knowledge of the problem domain, but writing code creates new constraints and opportunities that are virtually impossible to predict.
By restricting knowledge of the system to a single layer, a boundary is placed on the overall system complexity, promoting substrate independence.
通过将系统知识限制在单个层，可以限制整个系统的复杂性，促进了底层的独立性。
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Countries with a high score in the report's 'economic complexity index' have acquired years of knowledge in making a variety of products and goods and also have lots of room for growth.