Quotes About Model

I have high hopes for the book and have already made a down payment on a Ferrari. Well, it's actually a small metal model of a Ferrari, kind of like a Dinky Toy, but a little bit bigger.

I don't date my girlfriend because she's a model. I date her because I love her.

The basic problem is with the business model of journalism. That business model is premised on the idea that talk is cheap and reporting is expensive.

Dez, on the other hand, was pure backcountry Pennsylvania; a blue-eyed blonde who could have been a model for fitness equipment if not for what JT personally viewed as an overactive redneck gene.

A model is a selectively simplified and consciously structured form of knowledge.

The vital detail about the design is captured in the code. A well-written implementation should be transparent, revealing the model underlying it.

there should be some learning when a domain model is discussed.

Listen to the language the domain experts use. Are there terms that succinctly state something complicated? Are they correcting your word choice (perhaps diplomatically)? Do the puzzled looks on their faces go away when you use a particular phrase? These are hints of a concept that might benefit the model.

When a significant process or transformation in the domain is not a natural responsibility of an ENTITY or VALUE OBJECT, add an operation to the model as a standalone interface declared as a SERVICE. Define the interface in terms of the language of the model and make sure the operation name is part of the UBIQUITOUS LAN- GUAGE. Make the SERVICE stateless.

The astrolabe was a mechanical implementation of an object-oriented model of the sky.

If the design, or some central part of it, does not map to the domain model, that model is of little value, and the correctness of the software is suspect.

The domain model will typically derive from the domain experts' own jargon but will have been "cleaned up," to have sharper, narrower definitions.

If developers don't realize that changing code changes the model, then their refactoring will weaken the model rather than strengthen it.

Persistent use of the UBIQUITOUS LANGUAGE will force the model's weaknesses into the open. The team will experiment and find alternatives to awkward terms or combinations. As gaps are found in the language, new words will enter the discussion. These changes to the language will be recognized as changes in the domain model and will lead the team to update class diagrams and rename classes and methods in the code, or even change behavior, when the meaning of a term changes.

Any technical person contributing to the model must spend some time touching the code, whatever primary role he or she plays on the project. Anyone responsible for changing code must learn to express a model through the code. Every developer must be involved in some level of discussion about the model and have contact with domain experts. Those who contribute in different ways must consciously engage those who touch the code in a dynamic exchange of model ideas through the UBIQUITOUS LANGUAGE

Tightly relating the code to an underlying model gives the code meaning and makes the model relevant.

Complex object creation is a responsibility of the domain layer, yet that task does not belong to the objects that express the model.

That's because the default prototype for any instance you create (assuming you don't change it) is Object.

JavaScript has a very powerful object model, but one that is a bit different than the status quo object-oriented language. Rather than the typical class-based object-oriented system, JavaScript instead opts for a more powerful prototype model, where objects can inherit and extend the behavior of other objects. What

Cycle after cycle, the team is working hard, but the business is not seeing results. Managers trained in a traditional model draw the logical conclusion: our team is not working hard, not working effectively, or not working efficiently.

pivot is a special kind of change designed to test a new fundamental hypothesis about the product, business model, and engine of growth.

A pivot is a special kind of change designed to test a new fundamental hypothesis about the product, business model, and engine of growth.

As was mentioned earlier, this is not the way the Lean Startup model works, because customers often don't know what they want. Our goal in building products is to be able to run experiments that will help us learn how to build a sustainable business. Thus, the right way to think about the product development process in a Lean Startup is that it is responding to pull requests in the form of experiments that need to be run.

The word pivot sometimes is used incorrectly as a synonym for change. A pivot is a special kind of change designed to test a new fundamental hypothesis about the product, business model, and engine of growth.