Hannah Fry's new book: No One Knows What They're Doing
The Power of Doubt in an Overconfident World. Publishing 16 September 2027.
What the book is about
Fry's new book argues that almost everything lives along a spectrum of uncertainty, and that admitting what we don't know leads to better decisions and more productive disagreements. Examples range from space exploration to medicine. It is scheduled for publication in the same month the Come Fry With Me tour opens.
Key ideas
- Uncertainty is not ignorance — it is a more honest description of reality.
- Our brains crave binary answers, but most questions live on a spectrum.
- Embracing doubt can lead to better decisions in medicine, science and everyday life.
- Even experts are making their best guesses with incomplete information.
- When we acknowledge uncertainty, contentious subjects become less divisive.
- Doubt is a powerful tool, not a weakness.
Publication details
- Title: No One Knows What They're Doing: The Power of Doubt in an Overconfident World
- Author: Hannah Fry
- Publisher: Torva (Transworld / Penguin Random House)
- Publication date: 16 September 2027
- Pages: 304
- ISBN (hardback): 9781911709145
Editions
| Format | ISBN | Publisher |
|---|---|---|
| Hardback | 9781911709145 | Torva |
| Trade paperback | 9781911709152 | Torva |
| Ebook | 9781529955859 | Transworld Digital |
| Audiobook | 9781529955866 | Transworld Digital |
Pre-order
Connection to the tour
The book publishes on 16 September 2027, twelve days before the Come Fry With Me tour opens in Birmingham on 28 September. Both share themes of chance, uncertainty and decision-making. Fry's previous tours have tied closely to her latest books.
Common questions
When is No One Knows What They're Doing published?
16 September 2027, published by Torva (part of Transworld/Penguin Random House).
Is there an audiobook of No One Knows What They're Doing?
Yes. An audiobook edition is listed for the same publication date (ISBN 9781529955866). The narrator has not been confirmed yet.
Is this book connected to the Come Fry With Me tour?
The book and the tour share themes of chance, uncertainty and decision-making, and both launch in September 2027. Fry's previous tours have tied into her recent books.
How many pages is No One Knows What They're Doing?
304 pages, according to the publisher's listing.
Related pages
Publication date verified on Penguin UK. Last checked 2026-10-12.