There’s something charming about short books, and about books that include simple Sharpie-drawn graphics. And it’s good to be reminded that the search for riches is risky and silly. But The Behavior Gap: Simple Ways to Stop Doing Dumb Things with Money never moves beyond this simple idea, that we should look for simplicity, long-term safety, and peace of mind when investing our money. OK, we get that. Now what? Unfortunately, the very simple checklist at the end of the book never goes beyond reining in savings. Surely that’s not an adequate financial plan, is it?