Carnot model-thinking of design quality and design value

For the results of the design, we always want to see highlights, quality, details, and so on. But the points of these considerations are mixed, making it difficult for designers to check each design for verification when performing design work. I want to share to everyone, for the product of different types of quality, it is to achieve the purpose is different, the end of the design is also different, only in the right position with the force, in order to shape an excellent design.

At the same time can also be found, in fact, we work a lot of time in silence to do the design, most of the work is not all so important and dazzling, but it is necessary and critical. This is actually a design value assessment of a problem. When everyone's attention is focused on the most moving point of the product, we are separated from the different quality, will also be the value of our different parts of the work of a better affirmation.

Let's introduce the Carnot model:

Kano model is a very creative quality representation model, commonly known as the two-dimensional quality model. The so-called two-dimensional (two-dimension) is to include two dimensions, one is from the customer's point of view of satisfaction, belonging to the customer's subjective feelings, the other is from the product quality point of view of the provision, is an objective product function or function. The wild hunting model is illustrated as shown in Fig.

Two-dimensional quality is an extended model relative to one dimensional quality (one-dimension), one of which is that when the product quality is better or the demand is satisfied, the higher the customer satisfaction, the more linear (Linear) the relationship between the two is presented. From the point of view of one dimension quality, the more satisfied the customer is, the better the result.

Kano model is a Japanese master of Quality Management No Jizho (Noriaki Kano) Dr. in 1984 proposed. We discussed the three kinds of quality control, quality management and charm quality, respectively, in the "re-discussion of quality control and the creation of customer demand", and the model of hunting wild is an important theoretical model to expound the charm quality.

The professor said that the quality factor includes four parts, respectively, 1. No difference quality (indifference) 2. Charm quality (attractive) 3. One dimensional quality (one-dimensional) and 4. Essential Quality (must-be). The necessary quality is the basic requirements of the product, from the Hunting field model, no matter how the product quality upgrade, customers will have the upper limit of satisfaction.

No difference in quality is the product quality and customer satisfaction is not sensitive, or said no difference, in other words, this quality requirements of non-customer attention. One-dimensional quality is also known as linear quality, if the quality is good, customer satisfaction is high, on the contrary, poor quality customers will be given negative evaluation. Charm quality is a charm of quality needs, when this quality is not demonstrated, the customer does not feel at all, but with the increase in product quality, customer satisfaction exponentially increased, and increased the amplitude is much higher than one-dimensional quality. Based on this, the charm of quality is the customer "unexpected quality", and can create depth of customer satisfaction.

The creative place of the wild hunting model is to materialize the performance of the quality and customer satisfaction, and put forward the quantitative index. Quality and satisfaction are not completely linear, but have different distinctions (four modes). In addition, the product and customer satisfaction, an objective a subjective, a product based on a customer experience, a technology to provide a customer demand.

Finally, the charm of quality to create the model for the first exposure of the quality content, charm quality not only to jump off the material level of quality control, process level of quality management, more to the soul level of quality to create progress. In other words, only a true grasp of the different levels of quality and quality requirements, to be able to grasp the quality of the truth from a higher level, and provide different customers different products and services. Product quality has this rule, service quality is the same, previously mentioned patents and technical quality have similar rules.

Necessary quality

Design work: As the demand changes, the need for rigorous and coordinated, overall co-ordination. Work is carried out silently, not full of dazzling innovation, but indispensable, and for the composition of other quality products to set the tone.

Corresponding to the necessary quality, is the so-called "no no no no, there is a satisfied, no matter how useless" type, although it seems not flattering, but it is the most basic experience, can not be any part of the problem.

The whole information and experience frame of thinking and design, information structure, page layout. Here, we will focus on information accessibility, cognitive recognition, functional layouts, navigation, informational cues, extension methods, control types, and acceptance of the overall style.

Given the characteristics of the necessary quality, the design strategy here is more rigorous, meticulous, comprehensive to meet the needs of users, and try to cover all the requirements. Here, the user's needs are known to be available, and the product's strategy is defined to define the boundaries of the product requirements so that the designer can fully meet the needs of the user within that range.

But also note that here, the product form is susceptible to competition, and easy to do large and full, so need to have in-depth understanding of the project situation, and with product managers and the whole team good communication. Here, for the rest of the quality played a role in shaping the effect, if at this level, there are too many and similar traces of the competition, the expression behind the innovation, has a great impact, into a routine. For the mark of the goods and large and the whole problem, in fact, the whole product and interface needs to have a core concept and logic, will all the functions and experience of the flow of the process to form a perfect and easy to accept the system, is the most need to do here.

One dimensional quality

Design work: Optimization, optimization, and optimization. The real battlefield, shining the quality of the light of the place. Designers need to go deep into every detail, to continue the local iterative improvement and refactoring, in the process of continuous experience of products and users of the process of re-cognition, design, implementation.

For one dimensional quality, it is more emphasized that the user demands for the maximization of function and performance, and the complex interaction and presentation of information. For design, the availability of information and interactive processes, ease of use, durability, usability, robustness, scalability and so on will strongly affect the quality of one dimension.

At the same time, the attribute of one dimensional quality itself: customer satisfaction and quality are positively correlated, that is to say, we should do our best to optimize the experience to get better customer satisfaction. It should be noted that at this stage, the design optimization itself, with the gradual deepening of the constraints and obstacles will be more and more, and the implementation of the details of the feedback will become very important. The user value of the input that designs the same power will fall.

At this point, you need to return to the architecture level to expand the space and depth of the dimension, but also from the quality of no difference to obtain a breakthrough method to transform it into one dimension of quality or charm of the quality to solve. At the same time, the marginal utility attenuation of the user value of one dimensional quality itself will be displayed gradually with the further optimization. Therefore, we must regularly evaluate feedback and adjustments when dealing with two-dimensional mass availability.

Charm Quality

Design work: Charm quality is the cherry on the cake. Although we can not rely on the success of a cherry to solve all problems, but for innovation and the pursuit of the ultimate quality, we must continue to try and strive.

This is a very sensitive and interesting topic for the quality of glamour, and the factors that affect him are more complex and diverse, and the results depend on a lot of factors.

First of all, when the product level has no direction inclination, for the design of local innovation, the need for long-term adherence and optimization, it is possible from the user does not recognize the quality of no difference, upgrade to a very valuable and loyal charm attributes, and after becoming a charm attribute, experience the evolution of time and The imitation of the competition, Will degenerate into the necessary qualities. Therefore, local innovation to establish the charm of the process is a need for patience and adherence to the process, but also need excellent user experience to make a point to become a real charm point. For example, our QQ mailbox large files or QQ screen-cutting function.

Sometimes, we imagine that the quality of charm is based on design inspiration. In fact, the real innovative charm quality is based on a very understanding of users, the potential needs of in-depth excavation and appropriate design implementation. Thorough, in-depth, and sincere treatment of each potential need, it is possible to explore in a variety of idea, to discover the real value of the characteristics.

We also know that there is a charm of quality, is universal, and brand value has a close combination, is one dimensional quality in the right side of the process of continuous advancement, change to charm quality, this situation is not a flattering way, but also the most difficult to lose a charm quality. So for a product itself one dimensional quality of grinding, is the essence of the product is also the core. However, when the core itself will continue to lose a quality, this loss is a long time, and will not because of the competitor for a short while the follow-up and immediately lost, his loss is mainly in their own quality slowly decline, resulting in a decline in Word-of-mouth. Be careful, if word-of-mouth becomes worse, the process of replying is also very difficult and long.

No difference quality

Design work: This ... Let's see.

For the no difference in quality, can be seen as is but not.

No difference in quality is generally the last thing we consider. Because of the 80/20 principle, we attribute the quality of no difference to non-mainstream demand. In practice, a single user's feedback or a person's personal opinion on a team often leads to excessive attention to certain quality-free qualities. This is a loss of design costs, and it is important to note that if you can define it by user interviews or some other means without any difference in quality, you can avoid putting too much effort into unnecessary places and concentrating on the core of the matter.

In some cases, the content of the error quality can be converted to other qualities, and this transformation, sometimes the implementation of the team to promote, and more of the situation, is the user to carry out the excavation, which requires us for some temporarily no significant value of quality, for users to use a simple observation, open one eye closed. Sometimes it's just not the time.

(This article is from the Tencent CDC Blog, please indicate the source when reproduced)