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Who really said it

What's outside the simulation?

Spoken by Elon Musk b. 1971 · CEO of Tesla and SpaceX
Verified In copyright

Musk said these exact words when Lex Fridman asked what one question he would put to an artificial general intelligence. It came near the end of “Elon Musk: Tesla Autopilot,” an episode of Fridman’s Artificial Intelligence (AI) Podcast uploaded April 12, 2019. Quote Investigator ↗ confirms it.

Last verified 3 Nov 2026 · how we verify · spot an error?

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Verified quote & credit

“What's outside the simulation?” Elon Musk, answering Lex Fridman in “Elon Musk: Tesla Autopilot,” Artificial Intelligence (AI) Podcast, uploaded to YouTube April 12, 2019.

Can you use it?

Still under copyright (rights held by Lex Fridman (podcast recording); Elon Musk (his spoken words)). A short, credited quote is generally fine for talks, teaching, and internal decks; for commercial, published, or large-scale reuse, get permission.

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In context

Evoking the world of Elon Musk — Entrepreneur; CEO of Tesla and SpaceX, co-founder of Neuralink. Theme: "What's outside the simulation?". Atmospheric and restrained, cinematic directional light, a muted period-appropriate palette, fine grain and texture. Compose with generous empty space for the quote and a small credit line. No lettering in the image itself.

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Minimalist editorial slide for the quote "What's outside the simulation?". Clean background, a single muted accent color, generous negative space, subtle paper or linen texture, no literal illustration — let the words carry it. Reserve clear space for a serif quote and a small credit line. No lettering in the image itself.

Provenance

The source

Episode
Elon Musk: Tesla Autopilot
Series
Artificial Intelligence (AI) Podcast, hosted by Lex Fridman (now listed on YouTube as Lex Fridman Podcast #18)
First published
Uploaded to YouTube April 12, 2019
Location
About 31:57 into the 32:44 recording

Lex Fridman: So when, maybe you, or somebody else creates an AGI system, and you get to ask her one question, what would that question be?

(Long pause)

Elon Musk: What’s outside the simulation? Near the end of the interview

Transcription as published by Quote Investigator ↗. Inverse ↗ timed the pause at 14 seconds.

Video recording
Watch the full episode on YouTube
Quote Investigator: Quote Origin: What’s Outside the Simulation?

How the line was documented

In copyright

The line comes from a recorded podcast interview first published on YouTube on April 12, 2019, so the recording is in copyright. This page quotes only Musk’s one-sentence answer and Fridman’s question, with attribution.

Rights status is our research, not legal advice — and copyright varies by country and edition. For commercial or published use, confirm with the rightsholder. See terms.

Fact-check

Who gets confused here

This Musk line is real, which is rare. The usual mix-ups are about who said which part and what he meant.

Lex Fridman Asked the question

Fridman, then an AI researcher at MIT, asked the question: what one question would Musk put to an AGI system? The answer, “What’s outside the simulation?”, is Musk’s. Quote Investigator ↗ looked at both men and at an apocryphal origin before settling on Musk.

Elon Musk, quoted as making a claim Context lost

The line is often shared as if Musk were announcing that we live in a simulation. In fact it was his answer to a hypothetical: the one question he would ask an AGI. Quote Investigator ↗ concludes only that Musk suggested he, or humanity, might be in a simulation, and that a future advanced AI might be asked to work out what lies outside it.

Elon Musk said “What’s outside the simulation?” in Lex Fridman’s interview “Elon Musk: Tesla Autopilot,” uploaded April 12, 2019 (Quote Investigator ↗).

Context

Why he asked it

Musk had backed the simulation hypothesis in public before this interview. At Recode’s Code Conference in 2016 he argued that if games keep improving until they are indistinguishable from reality, “the odds that we’re in base reality is one in billions” (as quoted by TechCrunch ↗). He made the case again on The Joe Rogan Experience in 2018 (Wikiquote ↗).

Fridman’s question gave that idea its shortest form. Asked what single question he would put to a human-level AI, Musk passed over questions about physics or the future and asked about the boundary of reality itself.

What’s outside the simulation?

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Quote Origin: What’s Outside the Simulation?quoteinvestigator.com

Quote Investigator traces the line to Musk's 2019 interview with Lex Fridman and transcribes the exchange
Elon Musk: Tesla Autopilot (full episode)youtube.com

The primary recording, Lex Fridman Podcast #18; the exchange is near the end
Elon Musk: What's Outside the Simulation? (clip)youtube.com

Lex Fridman's own short clip of the exchange
Elon Musk: Tesla Autopilot (episode page)lexfridman.com

The podcast's episode page, posted April 12, 2019
Elon Musk reveals the one question he would ask a human-level AIinverse.com

April 15, 2019 report of the exchange, including the 14-second pause

The speaker

About Elon Musk

Elon Musk

b. 1971 · Entrepreneur; CEO of Tesla and SpaceX, co-founder of Neuralink

Elon Musk leads Tesla and SpaceX and co-founded Neuralink. He is also one of the internet’s favorite targets for made-up quotes. He has argued in public more than once that our reality may be a computer simulation, so this line fits his record and is one of the few viral Musk quotes with a recording behind it.

For writers & researchers

Cite this

Chicago

Musk, Elon. “Elon Musk: Tesla Autopilot.” Interview by Lex Fridman. Artificial Intelligence (AI) Podcast (now Lex Fridman Podcast #18). Video, 32:44. Uploaded to YouTube April 12, 2019. Quotation at about 31:57. https://www.youtube.com/watch?v=dEv99vxKjVI.

This verification page

Quotle.info. “Who really said ‘What's outside the simulation?’?” Last verified 3 Nov 2026. https://quotle.info/who-said/whats-outside-the-simulation/

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