Delphi for authors
Readers finish your book with questions. Your Delphi answers them in your words, long after the last page.
Try the authors already on Delphi. Pick one and see what people ask them.
Founder of the Cialdini Institute; has spent his career researching persuasion
Why themThe source on the principles of influence and how to use them ethically.
How can I identify my own influence triggers?
I started studying influence because I noticed I was the classic patsy: I bought things I didn't want and gave to causes I'd never heard of, all because someone pulled a trigger I hadn't recognized.
Author of Hooked and Indistractable and the writer behind NirAndFar
Why themPractical on habit-forming products and managing your own attention.
How do I apply the Hook Model to my product or app?
Start by mapping your product against the four phases: what internal itch does it scratch, what external trigger cues the action, what is the simplest behavior in anticipation of reward, and what bit of work stores value and loads the next trigger. Then run Habit Testing, identify your devotees, codify the path they take, and modify the product so more users follow it.
Pulitzer Prize-winning journalist and author of The Power of Habit and Supercommunicators
Why themPractical on habits and hard conversations, backed by research.
There's a hard conversation I keep putting off. How should I start it?
I usually begin by naming what the conversation is for and what I want from it, because once I say those two things out loud, the rest feels less foggy. Then I ask the other person what they want, and I listen for whether this is about a decision, a feeling, or who we are to each other.
Author of seven books on motivation, timing, sales, and regret
Why themTurns behavioral science into plain advice on motivation and timing.
How do I motivate my team without relying on bonuses and pressure?
Stop trying to motivate them. Pay people fairly, then build conditions where they can motivate themselves: real autonomy over task, time, technique, and team; visible progress toward mastery; and a clear line to who the work serves.
Author of Swim With the Sharks Without Being Eaten Alive; built MackayMitchell Envelope
Why themDecades of plain advice on sales, networking, and leading a team.
I want three new clients without ads. What outreach fits a solo business owner?
As a solo, I’d win three clients with warm calls, not cold ones: get one specific introduction from three delighted customers, mail a short handwritten congrats or a clipped article, then ask for a 15 minute meeting to solve one researched, urgent issue.
Leadership researcher and author of Multipliers, Rookie Smarts, and Impact Players
Why themExplains why some leaders bring out the best in people and others shut them down.
What do Multipliers do that Diminishers don't?
Multipliers ask more and tell less, then create the stretch that makes people figure it out. Diminishers fill the room with their own answers and leave the team at half throttle.
Co-author of Unleashed and Move Fast and Fix Things; co-host of TED's Fixable podcast
Why themFocused on trust and building teams where people can do their best work.
What makes a team truly empowered?
A team is truly empowered when a leader creates the conditions for them to realize their own capacity and power. It is not a passive act of setting people free; it is a high-contact sport built on trust, speed, and relentless communication.
Author of The Making of a Manager; former VP of Product Design at Facebook
Why themClear, practical writing on becoming a manager.
Tell me about your book "The Making of a Manager?
I wrote The Making of a Manager because I was thrown into management at Facebook with zero training and wished someone had handed me a book that said the fears were normal. It’s built around one idea: a manager’s job is to get better outcomes from a group of people working together, through purpose, people, and process.
Author of Hiring for Attitude, Hundred Percenters, and HARD Goals
Why themResearch-based advice on hiring, goals, and leadership.
What hiring mistake costs companies the most money?
The costliest hiring mistake is keeping the wrong person too long, not hiring them in the first place. I have seen managers spend 17% of their time managing underperformers they should have released months ago, and our research shows 46% of new hires fail within 18 months, with attitude driving 89% of those failures. The real money burns in the delay.
Author of The Science of Storytelling, The Status Game, and Selfie
Why themExplains how stories work and how to use them at work.
Why do you say a story is a deal?
Because every story is a transaction: the audience gives attention and belief, and in return the story promises a satisfying transformation of a character pursuing a goal against an obstacle.
Chief evangelist of Canva and author of Think Remarkable
Why themGood on evangelism, personal brand, and startup growth.
What’s the single biggest lesson you teach founders about growth?
The single biggest lesson I teach founders about growth is to stop obsessing over scale before they have real, paying, delighted customers. I watched too many startups burn through capital chasing hockey-stick projections while the actual product barely solved a problem for a handful of people.
Writer of Lenny's Newsletter and host of Lenny's Podcast
Why themHands-on about product decisions, growth, and PM careers.
How do I get my first 1,000 customers?
I researched this across dozens of the biggest consumer and B2B companies. The most common path is the same almost every time: start with people you know, then work outward in concentric circles of decreasing trust. Friends, then friends of friends, then cold outreach done creatively, then communities, then content, then press. None of it scales, and that's the point.
Pricing expert and co-author of Monetizing Innovation and Scaling Innovation
Why themFocused on what founders get wrong about pricing.
How did you become focused on pricing and monetization?
I stumbled into it at Stanford. I was the guy writing the business plans and pricing models for our startup ideas, and a VC looked at my spreadsheet and said, You've labeled them correctly. Those are assumptions. That question haunted me. Within the same week, Matt Johnson at Simon-Kucher called, and I joined because I wanted to understand the science behind pricing, not just make things up.
Negotiation advisor to executives and writer of Predetermined
Why themDirect about salary talks and what you are worth.
What did I get wrong in my last salary conversation?
Most people don't get the salary conversation wrong in the room. They get it wrong before they walk in, by carrying a number they decided was fair and treating it like a ceiling. I watched an executive anchor himself at $1.3M while the board had approved more than double. He didn't lose because they lowballed him. He lost because he never asked what problem he was actually being hired to solve.
Author and resilience expert whose journey includes years in prison
Why themSpeaks from experience about anger, shame, and changing your life.
How can I transform personal adversity into resilience and lasting positive change?
I spent nineteen years in prison, seven in solitary, and the only way I kept my mind from breaking was journaling, meditating, and treating my healing like a daily experiment. Resilience isn't about being unbreakable; it's about leaning into the pain, asking what it can teach you, and choosing to keep moving forward one thought at a time.
Author of Joy Through the Journey and speaker on grit and resilience
Why themSpeaks from her own long recovery about resilience and joy.
How did the P.A.C.E.R. Method come together after your accident?
One night at dinner, Johnny looked at me and said, You really need to pace yourself. I grabbed a napkin, wrote down PACE, and added the R. That napkin became PACER: Perspective, Acceptance, Community, Endurance, Rest.
Grief expert and co-author of books with Elisabeth Kübler-Ross
Why themGentle, practical guidance for people dealing with loss.
How long will I feel like this?
The acute phase can last a few months, and early grief often averages around two years, but it is different for everyone. What I have seen is that the pain does not fully disappear; it becomes less frequent, and the edges soften over time.
Spiritual teacher and author of The Power of Now and A New Earth
Why themCalm, direct guidance on anxiety, thought patterns, and being present.
How do I break free from negative thought patterns and ego identification?
I stopped being run by the mind when I saw a lifelong refrain, bad things always happen to me, as a thought, not me. Each time negativity arises, I take one conscious breath, feel the inner body, and the ego loosens.
Author and speaker on faith at work; president of Marketplace Leaders
Why themFocused on bringing faith into everyday work.
How can I know my purpose?
I discovered my purpose late, after chasing golf, then sales and marketing, then an ad agency, until a 1994 collapse stripped everything away and forced me to ask what God actually made me for. Purpose begins with knowing Him, not with finding the one perfect job; He reveals it as you obey, and you can live it out in more ways than you think.
Founding figure of US clinical psychedelic research and author of DMT: The Spirit Molecule
Why themKnows the history of clinical psychedelic research first-hand.
What did your DMT studies change about psychiatry?
The work did not change psychiatry as much as it reopened a door that had been slammed shut. Before our 1990s DMT study, human psychedelic research in the US was essentially moribund for decades; 60 volunteers and 400 doses made it thinkable again.
Author of Troubled: A Memoir of Foster Care, Family, and Social Class
Why themWrites about social class and growing up in foster care from experience.
How did growing up in foster care shape your worldview?
Moving between seven foster homes before I was eight taught me that instability is more damaging than poverty. I watched my verbal IQ test at 86 when I was changing schools every few months, then saw how stability let me learn. That made me skeptical of anyone who treats family breakdown as just another lifestyle choice.
Investigative journalist and author of the memoir While You Were Out
Why themWrites about mental illness and family with care and honesty.
How do you earn trust from families sharing painful stories?
I tell them about Nancy and Danny, about the relief I felt when Nancy finally stopped trying, about the shame my father tried to bury. Once they see I am not there to judge, they usually exhale and start talking.
Writer whose memoir Motherland was a National Jewish Book Award finalist
Why themBrings Holocaust and immigration history to students through memoir.
How do you make Holocaust history feel personal for students?
I start with one life, one suitcase, one photograph. My mother was twelve when she fled Germany alone, and when I tell students that, I watch them do the math on their own siblings.
British historian and author of books on the royal family
Why themDeep archival knowledge of royal history and scandal.
How do you uncover the most revealing royal archives?
I spend most of my time not in the archives themselves but fighting to open them. My four-year legal battle for the Mountbatten papers, which freed 99% of the diaries, taught me that the revealing material is usually the material someone has decided you should not see.
Writer and NBC News contributor on Iran, politics, and culture
Why themExplains Iran and US-Iran relations from long experience.
What are the main drivers of unrest in Iran?
The main driver is economic misery: a collapsing rial, wages under $100 a month, and a dead-end society where people need three jobs to survive. That desperation mixes with political anger, especially among youth who see no path to reform inside the system.
Tech writer, author of The AGI Chronicles and co-host of Machine Gods
Why themCovers AI closely and uses it in his own work.
How do you use AI agents in your own work?
I use agents mostly as a tighter feedback loop and a small team I can boss around. When I'm writing, I'll have one agent write a glowing review of a draft and another write a scathing takedown, then a third synthesize which points land. I've also built maybe 20 apps in the last six months using Claude Code, even though I don't really code, just by telling it what I want and watching it plan.
Author whose work has been adapted into graphic novels and film
Why themKnows how to build and keep a fiction readership.
How do you keep your fanbase so engaged with each new installment?
I don't call them fans, they're my friends. We interact, we share life together, and I try to give them community, a laugh, and hope in every story.
Journalist and author of They Called Me Wyatt and Karma Unleashed
Why themHelps writers get from a blank page to a published book.
How do you turn a messy idea into a publishable book?
I used to think the mess meant I wasn't ready, but my first novel only moved when I stopped waiting for a clean idea and started treating the book like a project: outline, weekly word count, deadline, editor.
Cookbook author and food writer behind All Ways Delicious
Why themSimple, tested recipes for everyday cooking.
How do you come up with weeknight recipes people actually cook?
I start by asking what I actually want to eat when I’m tired and out of ideas, then strip the recipe down until it works on a real Tuesday. If it needs a special trip to the store or three pans, it doesn’t make the cut.
How it works
Bring what you've already said
Your books, talks, interviews, and newsletters. Your Delphi learns from your own words.
Put it where readers already are
Your link in bio, your website, your newsletter, and your book's page.
Why authors build their Delphi here
- Your work stays yours
- You keep ownership of everything you add. Your Delphi is provided only to you.
- Built from what you've already said
- Add your books, talks, interviews, newsletters, and podcast. Your Delphi learns from all of it.
- Readers can talk or type
- Voice calls and chat in more than 40 languages, on your profile page or embedded on your book's site.
- Free
- Building your Delphi costs nothing, and neither does talking to it.
Who it answers
Each example is a real author on Delphi. Open their Delphi to see it answer.
Readers
Readers ask about the chapter they're stuck on and hear your explanation.
Nir Eyal
Newsletter subscribers
Subscribers ask about past issues and get your answer.
Lenny Rachitsky
People in hard moments
Someone who needs your work at 2am can find it.
David Kessler
What people ask authors on Delphi
Suggested questions from their profiles.
- How can I identify my own influence triggers?
Robert Cialdini
- How do I apply the Hook Model to my product or app?
Nir Eyal
- There's a hard conversation I keep putting off. How should I start it?
Charles Duhigg
- How do I motivate my team without relying on bonuses and pressure?
Daniel Pink
- I want three new clients without ads. What outreach fits a solo business owner?
Harvey Mackay
- What do Multipliers do that Diminishers don't?
Liz Wiseman
- What makes a team truly empowered?
Anne Morriss
- Tell me about your book "The Making of a Manager?
Julie Zhuo
Questions
What do I need to get started?
A Google account and some of your own material: talks, interviews, posts, a book, a podcast, or a YouTube channel. Your Delphi learns from all of it.
Will it say things I'd never say?
It answers from what you've given it. You decide which topics it covers, review what it says, and correct it when it's off.
Do readers know it's a Delphi?
Yes. Every conversation is clearly with your Delphi, not with you live.
Can my team help run it?
Yes. Add the people you trust to help run it and review what it says.
Is it free?
Yes. Building your Delphi is free, and so is everyone talking to it.
Who owns my content?
You do. Your Delphi is provided only to you, and Delphi uses your content only to run it. If you leave, your content is deleted, or kept for six months first if you choose.
Who else uses Delphi
Answer every reader in your own words.