This book seeks to tackle one of the problems of advanced programming, that of fluency and clarity. Some authors write in a style that is a pleasure to read whilst others write in a pedestrian style that makes reading hard work . The same applies to programmers.
Some programmers produce source code that is clear and easy to follow.
Others produce programs that solve the problem they are designed to tackle but in an opaque fashion that leaves others wondering what it does and how it works. The problem is partly one of familiarity with the language. I am always amazed by those who tell me that one advantage of Pascal is its readability. I still find it difficult to follow, but I also find Japanese hard work I do not use either as working languages though my interests have required me to struggle with material in both. Another part of the problem is familiarity with the idioms and style of a language.