In the world of software engineering, there is a constant change. Anything we learn has a potential to get redundant just in a matter of years. A lot of languages, methodologies, techniques, tools, frameworks, libraries came in with a huge noise and went away silently. Very few things manage to live for a decade. However, there is one thing which has been there for more than half a century, and remained unchanged. It is the core of all operating systems, and also all compilers and interpreters of unexceptionally all programming languages, and it is also the father of almost all…