This book is hilariously bad. The issues are likely due to poor translating. Did anyone proofread this thing for proper syntax and conceptual correctness? Ironically the notes say that Ash is known for his 'famously clear writing' but even his bio blurb is confusing and translated poorly.
Im disappointed because i had high hopes. There are short course guides and long course guides but i havent found a great middle distance book. If the publisher decides to comb over this thing to make it sensical and then reprints it ill be the first to reorder!
The bottom line is that this book is not usable/readable in its current form and anyone looking for a middle distance training guide should look elsewhere.