A swimming pool develops a crack. A mother develops dementia. Everything you ever cared about, everyone you ever cared about will wither, decay, and fade away. You will wither, decay, and fade away. One character in the book, a swimmer, says "Everything is loss." She wasn't wrong; piece by piece, it all vanishes. I loved this book and recommend it and say: Brace yourself. I also noted the passage "And the time that your other brother, the lawyer, went after her boss, Dr. Nomura, when he tried to cheat her out of her 401(k)…." If that's based on a true story, then I'm glad that brother knew what to do.