Hmm the format is nice but the author doesn't seem to have a good understanding of the underlying theory. For instance, question 8 describes a function that do

Hmm the format is nice but the author doesn't seem to have a good understanding of the underlying theory. For instance, question 8 describes a function that does not halt, it asks you to answer whether it halts or not (the answer is no) then it tells you it does halt (wtf) if you implement it on Javascript (wtfx2). This theory has to be approached from an abstract point of view, that kind of argument is conceptually equivalent to "it does halt because I will destroy the computer with a hammer, lol". From there it just becomes more and more deranged with each question.