2 Nothing to steal, kill, destroy
Author: Bo Zhang Xing
Citizen2yy@hotmail.com
10 thieves come, not to steal, kill, destroy; I am coming, it is going to call Yang's life, and get more rich.
Whenever, if people just use automation tools that ignore human factors, it is impossible to perfectly describe demand. Moreover, with the mixing, it seems that the entire demand specification specification may bring a variety of explanations.
[Extreme Branches]
Wang Er noted that there were more and more patients in the world, so he told our design organization: designed a product that protects your eyes. Three months passed, Wang Er came to him, but he found almost nothing. Designers are still not fighting for products. Typical product directions include various glasses, eye masks, eye drops, rich in vitamins, eye health exercises, some kinds of glass, vision tables, science, small graphics, tip, hypnotic songs in front of the monitor ... The truly idea is to let him cultivate professional Wang 5 comrades have a new vegetarian variety, which contains and rich iron elements and phosphorus elements, which is beneficial to the health of the eye. ---- Citizen2yy
If Wang Er only puts his demand statement to "design a product that protects the eye", it is estimated that it will miss the vegetarian planting season.
Another example, some saying "Design a solution for protecting a small group of residents from environmentally invading". Three different options are given in "Exploration Demand":
Solution 1: Small Soil Forum 2: Castle Plan 3: Space Station
Obviously, these three programs do provide an effective solution for demand statements, but this kind of horse-wide air play has also surprised us. Needless to say, this difference is rooted in the content of demand statements.
The meaning of the meaning has been explained, and we do a slightly in-depth analysis. We believe that there are a variety of forms in mixing, as just now, we have found three places that have not collected.
(1) Ideal is not full. That is, this requirement states the lack of many necessary product nature descriptions. For example, there is no mention of the use of this scheme, durability, cost, etc., the size, shape, weight, life, etc. of this product are not mentioned; the function that may be included in this thing, The physical environment, cultural atmosphere, etc. have not been mentioned; we even have a small group of people or a few dogs, or a large woven mice is unclear.
(2) It is unclear. The word virgin is an important source of mixing. For example, "Small" is a vague word. For Yao Ming, 2 meters high guys are small children; and for the Japanese, the 1 meter 70 men are already in their big one. Also, "group" is also a vague word, which suggests that there is a relationship between these residents, but we still don't do it. Even the word "building" is also vague, so there are several programs in front.
(3) The understanding is self-righteous. Everyone in the world has their commences to certain understandings, while seeing those different opinions are biased or drill angular pointers. The weakness of human nature allows them to think that the views represent most people, thus regarding their prejudice as a consensus, ultimately falling into a true misunderstanding. For example, in the statement that we did not see the word "building", but in inadvertently entered our discussion, even the basic conditions for design. So, we were imagined in the air in the air, and they didn't want to innovate in a small box. No need for buildings and protect their programs. You can use the shield to prevent radiation from intrusion, you can use the warning of the shackles to prevent outsiders from mistaken, and can even use exercise to keep the body is invading the body, with migration to avoid climate change.
The content of the demand, in the "past developer" (see Zhou Huajian "with the past people"), it is undoubtedly the demand in the development process continues to expand, the progress is continuously delayed, the quality is constantly decreasing, the controllability is empty Culprit. It is a devil, from hell, wants to know more, see Chapter 3, "Hell". [殃 and pool fish]
In front of us, we always introduce you to the truth we think, here, give a little experience, but prove that we are not empty.
Comrade "Software Engineering Economics" BABRY W. BEOHM commented on the study of 63 software development projects, the following table, may wish to read, right is the histogram corresponding to the table, may wish to look at it.
Discovering errors, cost multiples demand phase 1 Design phase 3-6 Coding phase 10 Development test phase 15-40 Application test phase 30-70 The actual operation phase 40-1000 In order to correct an error, the cost to pay
Although the above table has been vividly explained: For any error, if it can be found in the demand phase, how will it save costs! However, experts said, these numbers are still conservative, because the projects of comrade Beohm have been completed, that is, this data has not included at least 1/3 of the unfinished project, and these difficulties are very large. The extent should be "attributed to" demand analysis.
The Ford Pinto car produced in the 1970s did not consider any rear-end events (not required for demand), put the fuel grooved bolt on the ass, this design is very "scientific". The results of it? Real-frequency rear-end events, this brings great threat to Pinto, so Ford Motors spent $ 100 million to fight lawsuits and recalls have been sold. Don't see 100 million yuan, you will not let the Ford car are closed, but how many families don't go down because of this damn Pinto? Johns-Manville has been a company company company, and they found that asbestos is very suitable for building materials in new product development. When the company puts all resources into asbestos building materials, it has caused a lot of customer prosecution, according to a population research company, there is approximately more than 50,000, mostly because of asbestos Epidemics will bring epidemic to human bare skin (the demand is not integrated, and the understanding is self-righteous). Finally, the company has a $ 2 billion debt on this, bankrupt. Johns also escaped, now the company is renamed MANVILLE.
These 2 stories tell us that if the demand work is not done well, it may lose $ 100 million, or may lose 2 billion US dollars, and bankruptcy.
[Chaos First Open]
Decades have shown that those mistakes, failure or catastrophic projects have made investors have made tremendous considerations, and most of these projects originate from the need. The purpose of this book is to introduce readers to some of the tools that have successfully applied to suppress a mixed demand. Most people who hold some beliefs or ideals will consider that there is a completely determined thing in this world; when they are planning a project, they regard the project as a standard. Now, we will then propose the project, then this project requires the demand statement we have gained; unfortunately, this demand statement is mixed in most cases.
The world's greatest physicist, Newton and Einstein, turning to the first promotion in the final stage of their lives. The first promotion is particularly important for thinkers who are in the "science". The science itself is a kind of learning that cannot be selfless; this is different from faith, and there is no need to say it. So the legend related to beliefs, such as the ancient open space, such as God, will explain the beginning of the creation as a determination process. However, there is no need to have a progressive basis for progressive demonstrations, and you can deal with predictions, as well as it seems some truth. --Citizen2yy Although we prayed many times to bless the bless, in specific practice and entrusting others, we will always hope that the methods used are scientific. So, for the demand that exists in the heart of the idealist (or paradise), it is best to comply with some scientific criteria.
Here we will explain that the demand exploration process is a progressive process that can be gradually measured. And our hypothesis is that all of our related personnel have indeed believe that there is a clear demand, and everyone is willing to find them together.
The ancients observed that the universe originated from a huge egg, the so-called Taiji, chaotic is not open; people in ancient and modern China are called this initial state "chaos". Let's take a look at how to find this boundary line of the open space. There are different spaces, we have to separate the sky. If we really find the horizon, it means that we have a perfect demand description.
This line between the sky and the ground is a description we need.
The left picture shows the exploration process of the demand, which is actually very simple and gradually approaching, but it is often ignored by our needs analyst. Pangu opens up the heavens and the earth is an ax an ax, demand exploration is also gradually expressed in detail from a vague description. The black area in the left picture represents those we want, or we have asked and unwanted. By using the demand tool, we narrowed this part of the area and getting closer to us not much about what you want.
Each new egg represents a stage in the demand process, each intermediate segment is a better approximation for the real demand line, but unfortunately, this process is always approximate. Our exploration is to work hard to make this approximate error as small as possible.
The previous "exploration" has been "explored", this exploration is like "adventures", here is given the steps to see our future process:
1. Move in a direction.
2. See what I found there.
3. Record what you find.
4. Destinations analyze the things found.
5. Select the next direction by the analysis and record of the discovered things.
6. Jump back to step 1 and continue to explore.
[Warning]
1. We don't like the reason for mixing is a cost of mixing; we think that the aidity is found, the sooner, because the earnings the cost, the lower the cost.
2, always reflect on ourselves, reflect on the aidity in the process of demand, and reflect on the troubles of this mixing. If you find that the product is not completely as you think, you can ask yourself: "What is the need for us to make such garbage products?"
Sheep's door (0)
Goat's door (1) - thief and robber
