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In software engineering, the laws of software evolution refer to a series of laws that Lehman and Belady formulated starting in 1974 with respect to software evolution. [1] [2] The laws describe a balance between forces driving new developments on one hand, and forces that slow down progress on the other hand. Over the past decades the laws ...
Software evolution is the continual development of a piece of software after its initial release to address changing stakeholder and/or market requirements. Software evolution is important because organizations invest large amounts of money in their software and are completely dependent on this software.
Eroom's law – is a pharmaceutical drug development observation that was deliberately written as Moore's Law spelled backward in order to contrast it with the exponential advancements of other forms of technology (such as transistors) over time. It states that the cost of developing a new drug roughly doubles every nine years.
Law of Demeter, also known as the principle of least knowledge; Law of conservation of complexity, also known as Tesler's Law; Lehman's laws of software evolution; Loose coupling; Minimalism (computing) Ninety–ninety rule; Open–closed principle; Package principles; Pareto principle; Parkinson's law; Principle of least astonishment (POLA)
The organization of the software and the organization of the software team will be congruent, he said. Summarizing an example in Conway's paper, Raymond wrote: If you have four groups working on a compiler, you'll get a 4-pass compiler. [4] [5] Raymond further presents Tom Cheatham's amendment of Conway's Law, stated as:
Information technology law (IT law), also known as information, communication and technology law (ICT law) or cyberlaw, concerns the juridical regulation of information technology, its possibilities and the consequences of its use, including computing, software coding, artificial intelligence, the internet and virtual worlds. The ICT field of ...
From 1964 to 1972 he worked at IBM's research division in Yorktown Heights, NY where he studied program evolution with Les Belady. The study of IBM's programming process gave the foundations for Lehman's laws of software evolution. [8] In 1972 he returned to Imperial College where he was Head of Section and later Head of Department (1979–1984).
The laws of technical systems evolution are the most general evolution trends for technical systems discovered by TRIZ author G. S. Altshuller after reviewing thousands USSR invention authorship certificates and foreign patent abstracts. Altshuller studied the way technical systems have been invented, developed and improved over time.