Computer How to build a system with good cost performance - face the dilemma of using intuition when you want to make a good estimate PC software

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Computers
computers
How can we make an accurate judgment on the question, "Aren't we spending too much money on the system?"? For those who suffer from the dilemma, "Even if we seek technology that doesn't rely on intuition, in the end, there are more than a few things that rely on intuition." "Compared with past cases, if the original cost is wrong, it will be a series of errors, and it will soon become obsolete." The author, who has experienced many large-scale systems, teaches the essence of intuition and experience, in which you get the maximum effect at the minimum cost.