With one of my MPEG system friends, I did have many arguments during our joint life in MPEG. He even may have had the impression that I disagreed with him "by principle". But when I was invited to attend the party to celebrate the 100th MPEG meeting and told him about my book, he said: "that will become a collector's item". Of course, I disagreed with him again, but then I thought, "well, perhaps he is right, for the first time". Perhaps, after so many years, we finally found a statement both of us can agree with...!