In 2014-2018, the book was called "Reverse Engineering for Beginners," but I always suspected that this was too narrowing the audience. People from information security know about "reverse engineering," but I rarely hear the word "assembler" from them. Similarly, the term "reverse engineering" is too unfamiliar for a general audience of programmers, but they know about "assembler." In July 2018, for the experiment, I changed the name to "Assembly Language for Beginners" and posted a link to the Hacker News8 website, and the book was generally well received. So, so be it, the book will have two titles. Although, I changed the second name to Understanding Assembly Language, because someone had already written the book Assembly Language for Beginners.