The Human Projot and the Other Side or Nothing

In the final chapter of your book, you say that human beings are nature's greatest mistake. And i'm wondering if you could elucidate that a bit because it is different. It doesou, you end up, your final three word sentence is a differ than i've read in any of your other books. So, a, e, could you talk about that? For feel embarrassed in ending the book the way i did when i did the audio book.