The CBD (Component-Based Design) is not a peripheral issue or afterthought, but the very heart of designing and building complex physical products (either in step-1 or step-3 of CBD-process). Although physical components and CBD are taken for granted (as free oxygen in the air for breathing), its value would be realized if designers of complex physical products are prevented from using components and hierarchy of replaceable components for designing complex one-of-a-kind physical products (e.g. experimental automobiles, jet-fighters or spaceships) either in step-1 or step-3 of CBD-process (e.g. designers of physical products face crisis even larger than the crisis being faced by the designers of software).
The software industry is inventing hundreds of new kinds of software products each year. Likewise, mankind is inventing many new kinds of products each year. For example, please click here to review the design of a physical-product artificial-kidney that is in the process of being invited. This CBD-process must include (i) partitioning the product into hierarchy of replaceable components (i.e. CBD-structure), (ii) designing and building each component individually and (iii) periodically assembling the components to build the product to make sure that the components are functioning as intended and the product design is progressing as expected.
The process of designing any (software or physical) product and each of its large functional components is an iterative process, where each component is improved individually little-by-little to make it as best as it can be. No large functional component is neither magically works perfectly first time nor magically appears in a fine day. For example, in case of City_GIS application on the first day each component is empty whitespace or a pretty-GIF image as a place holder. In the next first iteration, if we assemble all the RCCs, only 10% to 20% of the features might be working in each of the components.
Today no other GUI-API is capable of encapsulating such large SCC in a RCC. If each SCC is not encapsulated in a RCC, the custom application code implemented for the application would begins as a spaghetti code even in the first iteration (having 15% features), since many application files contain source code for more than one SCC. This spaghetti code grows each day as each developer adds more and more code each day (in the non-exclusive files). No component can be tested individually, for example to test newly added features. So it makes nearly impossible to predict what sort of effect a small change in the custom application code of a SCC would have on other parts of the ever growing spaghetti code (comprising application code of all the SCCs of the application). In this case, each file comprises code-sections for multiple SCCs and code-sections for each SCC spread across multiple such files.
Any changes made for unpredictable future needs, wisdom gained from use-cases, changing technologies or sparks-of-innovation would cost many times more, while adding more and more spaghetti code to one or more of these files. For me, most of the innovation-sparks come after completing 80% or most of the implementation (because I gain more and more insights and expertise as I work every day by intensely focus on each feature and problem domain); or by looking at how the features are being used by users, and feedback of users help me realize what matters most to them in day-to-day use. I am sure, the basic need for agile program is to provide a mechanisms to make incremental improvements.
Today's spaghetti-code is worst possible mechanism for agile-programming. The componentization of a complex problem into hierarchy of replaceable self-contained modules is most effective and efficient mechanisms known to mankind for improving each module little-by-little to make it as best as it can be individually. I am repeatedly using phrase "refining each component 'little-by-little'", which is from famous book on Evolution of Useful Things; and also using phrase "making each component 'as best as it can be' individually", which is from video of designing new artificial-kidney. This is the only way for useful components to get closer and closer to perfection. A product can get closer and closer to perfection by making each component gets closer and closer to perfection.
Please consider this spaghetti code in contrast with the CBD of any physical product or City_GIS that is partitioned as hierarchy of replaceable components. The source code for each RCC/SCC is implemented in a set of exclusive files, where the exclusive files do not contain code for any other SCC. I can readily find all the code for each SCC even after few years, if I need to add more features (I don't need to see even a single line of code for any other SCC in the exclusive files of it's RCC). Each component can be tested individually outside of the product. If it works outside as expected and interfaces are not changed, it works predictably when assembled. It is much simple to predict the impact of even extensive redesign of a RCC.
In case of software, most of the need for such need for prediction or guessing by using intelligent CASE-tools to manage and automatically detect any changes resulting in inadvertent incompatibilities in the coupling interfaces. So real-CBD for software can be far superior than CBD of physical products, once real-software-components are discovered.
True componentization requires sandboxing and versioning of each component for refining little-by-little individually to satisfy evolving needs. An ideal mechanism for agile-programming must let the programmer focus and work only on essential complexity, by eliminate all the non-essential overhead (or accidental complexity). For example, in case of physical components, the designers can disassemble each component and can focus only on the component. If each SCC is not encapsulated in a RCC, the spaghetti code (e.g. code-sections of other SCCs) surrounding the code-sections of the SCC adds huge amount of accidental complexity.
The replaceable-components offer many other kinds of benefits, such as experimentation (which is extremely useful for innovations). For example, if I had a spark-of-innovation and asked an engineer to redesign a component and he ruined the code structure due to inexperience or a big customer prefers older version, I can still restore older version of the RCC in minutes from version-control-system. It is not practical in the existing spaghetti code, since each of the files that contained code-sections of the SCC also contain other code-sections for other SCCs and these other code-sections likely have been changed for redesigning the other SCCs.
It is not possible to list all this kinds of benefits of real-components and real-CBD, but it is sufficient to say componentization and hierarchy of replaceable components offer perfect mechanism for agile-programming. Many software experts give baseless excuses that software is different, because we can't see or touch each component as we can do with physical components. If I am designer of City_ATC of City_GIS, why can't I see or touch? I can touch and see any software component better than, I can see or inspect the circuits in semiconductor-chips. One may think and argue, they are different things. But please understand that I know what I am talking about (it is a long story, but let me briefly explain why I am qualified to say this):
I worked for Advantest (the largest test equipment company) for more than 3 years designing software for parametric testing of IC-chips. Parametric testing requires inputting test values at input and testing output (0 or 1 by using a given range of volts) after waiting some time (to allow propagation delay). The wave-forms at both input and output are highly analog (can take a range of values). I also worked for KLA-tencor (the largest maker of optical inspection equipment) and I was responsible for a software product called KLA25xx, which was installed in 90% of the semiconductor-fabs in the world during mid-1990s.
The inspection equipment of KLA-tencor optically-inspected the chips at various steps of manufacturing and stored defects and images in software product KLA25xx (e.g. for online monitoring at real-time and offline analysis for improving the process at later time). I was solely responsible for this product for 4 years and intimately knew each and every module of this product. It is amazing that each computer is working perfectly, when billions of things could go wrong in imperfect etching of the circuits and resultant analog waveforms due to even minuscule imperfections in etching. So it feels silly to hear such excuses that, we can't see or touch software. I can see RCC of my City_ATC far better than I can see circuits. I can use debugger tool to step through each line of code. if I need to add more features one year after releasing the City_GIS, only thing makes my life miserable is searching and finding all the sections of the code spread across the spaghetti code in ever changing non-exclusive multiple files for other SCCs, if the SCC is not encapsulated in a RCC (exclusive files).
On the other hand, today even large physical functional-components are designed as software. The soft-design of the physical components are called blueprints. The designers of physical components redesign each of the blueprints to redesign each of the physical-components, such as engine or gearbox of cars. Many of the components for Boeing Dreamliner or Airbus-380 are designed and tested as blueprints. The component interfaces and compatibilities for Airplane models are validated using CAD-tools similar to our proposed intelligent CASE-tools. Once real-software-components are discovered, I feel no one could see much difference between designing and building physical functional components and software components. The real-software-components certainly shall have clear and distinct advantage, because we can design software components more intelligent than mechanical components made of metals (e.g. for collaborating with CASE-tools to automate couplings).
I can write this kind of things endlessly (if any one has intellectual curiosity and cares to know), and for many aspects I don't even know where to start. If one wanders for 10 years in an vast uncharted area no one else don't even know exist, one get to learn very little about countless new species (i.e. thing or aspects) belongs to the ecosystem of this new vast uncharted area (or new paradigm). It is much bigger that one man or even 100 men could explore. I am eager to make the world aware of this vast uncharted area and start exploring countless possibilities.
I found my treasure (i.e. patents for real-software-components), but it is just a beginning and I feel other early explorers would find other treasures (and I am hoping that other treasures won't undermine value of our patented treasures). Although it is not simple and challenging to master such Kuhnien paradigm-shift, I am sure there shall be plenty to go for early explorers, who took the challenge. I feel, if I am successful in exposing this huge error, most software experts would be forced to master this new paradigm sooner or later (either by choice or for survival in the long-term).
The main question is when and how I could succeed in exposing the error (if ignore the possibility that I might fail). The next question is, if the
or left to a foreign competition to exploit these new discoveries. US
has only few research organizations and researchers, and I found most of them
are devoid of any accountability (i.e. they simple don't care, and most are
busy self-promoting before their political bosses, since top posts are
political appointments based on cronyism than merits). India
I am beginning to feel the
research organizations are becoming
as bad as Indian research organizations. There is no way for making the
research organizations aware of this kind of huge errors. For example, if we
try to call, executive secretary answers phone to say he is very busy. Although
the job of SEI of CMU and SDP of NITRD is to search every cave and even far
corners for this kind of basic discoveries and must be shocked to know this
kind of huge error and scramble for finding reasons for breakdown of basic
scientific process. Instead they refuse to pay attention or listen to what I
wanted to say. US
The scientific process is broken, so we can and must fix it, by making real respected researches aware of broken scientific process and resultant huge errors. How or where can I find real software scientists & researchers who care about science & technology?