Model vs. Algorithm: change of paradigm in information technology

Algorithm is one of the most fundamental concepts in information technology. Its absolutely dominant position reminds that of programming in machine codes during the era of the first computers: it appeared to be the only conceivable method to communicate with a machine, but its fate disproved this axiom. The same future undoubtedly awaits Algorithms as well, and we want to prove the thesis in this present paper:

• Although this notion appears to be natural, Algorithms are natural only for computers (and for professional programmers, of course). This is result of a fundamental difference between the traditional algorithmic approach and that based on the notion of a Model, which is the most natural way to work for a problem-oriented expert (engineer, economist, etc.)
• In the nearest 10–15 years the fate of Algorithm will repeat that of machine-code programming: it will preserve its place only in the lowest and relatively thin layer of software technology.
• The technology that will replace the current Algorithm-based paradigm already exists. It provides the user with qualitatively new capabilities: now the user can interact with his Models directly, without any mediums from Methods, Algorithms and Programming. This technology is a part of the constraint programming approach to the formation of a new IT paradigm.