Game Wizards is very decidedly not a book about who invented which system in D&D. But early drafts of the book did track one design choice in D&D that Dave Arneson perennially criticized: the system wherein characters gain more hit points as they go up in level. Arneson held that character hit points should instead be fixed at character creation, and that characters should become harder to hit as they rise in level. While that story thread failed its save against manuscript bloat, restoring it does add context for Gygax and Arneson's subsequent disputes. Probably the most well-known place Arneson mentioned his system was in the introduction to the First Fantasy Campaign (1977), as shown above.