It wasn't a real debate since, two philosophers were interviewed separately and hence, there wasn't the opportunity for each of them to challenge each other. That caused the book to be more of an effort to contrast two very different idea rather than a critical review of them. The book had a introductory article which was written by a Marxist scholar and it was totally against Popper insofar that I stopped reading it in the middle. All in all, the content of "Revolution or Reform? A Confrontation" was not as interesting as its title suggested.