Struggling to find perfect equality in their marriage, Nate and Kaley Klemp eventually realized that instead of going 50/50, they should attempt to be "all in." In their marriage model, the Klemps suggest each partner give 80%, proposing that radical generosity will transform your marriage partnership.

I love that The 80/80 Marriage points out that 50/50 is a myth. Marriages are too complex for couples to ever be able to attain perfect equality. Fairness on the other hand is another matter, and a 45/55 split or even a 40/60 split can be fair depending on the circumstances. However, I would assume most people in these types of marriages already know that equality and fairness are two separate things and don't need this book.

On the other hand, for couples in severely off-balanced relationships, The 80/80 Marriage points out the flaws in their marriage without giving enough tools to help shift the balance. Maybe some under-performing spouses will be willing to take advice from a self-help book at the prompting of an over-performing spouse, but many likely will not. Which obviously limits the usefulness of the book.