61.大多数设备如何工作取决于它被生产成什么样子，而不是设计成什么样子。问题出在设计制图上，错误理解了设计者的意图或者元器件的特性。
Rule #62: Not using modern techniques, like computer systems, is a great mistake, but forgetting that the computer simulates thinking is a still greater mistake.
62. 不使用诸如计算机系统之类的现代技术是一个重大错误，但忘记计算机只是思维的模仿是一个更大的错误。
Computers and Software
Rule #63: Software has now taken on all the parameters of hardware (i.e., requirement creep, high percentage of flight mission cost, need for quality control, need for validation procedures, etc.). It has the added feature that it is hard as blazes to determine it is not flawed. Get the basic system working first and then add the bells and whistles. Never throw away a version that works even if you have all the confidence in the world that the newer version works. It is necessary to have contingency plans for software.
63. 软件已经承担了一切硬件的参数 (例如，需求延伸，高比例飞行成本，质量控制需求，过程确认要求等) 。还有个特点是，谁也不敢确定新功能不存在错误。首先让基本系统工作，然后再加上铃铛和哨音。永远不要淘汰还能用的版本，就算你有十足的把握更新的版本已能胜任工作。有必要对软件准备应急方案。
Rule #64: Knowledge is often revised by simulations or testing, but computer models have hidden flaws not the least of which is poor input data.
64. 认识总是被仿真和测试所修改，但计算机模型并不会仅仅因为数据输入错误而隐盖某些缺陷。
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