# AI consciousness has no scientific test, but behavior may settle it

Markdown copy of https://realalpha.app/s/ai-consciousness-has-no-scientific-test-but-behavior-may/ on Real Alpha, the best minutes from long interviews with the people building AI. Cite and link the page, not this copy.

- Speaker: [Ray Kurzweil](https://realalpha.app/people/ray-kurzweil/) · Ray Kurzweil is an inventor and futurist.
- Host: [Peter Diamandis](https://realalpha.app/people/peter-diamandis/) · Founder & executive chairman, XPRIZE Foundation · Co-founded Singularity University and founded Zero-G; co-wrote the books Abundance and Bold.
- Host: [Salim Ismail](https://realalpha.app/people/salim-ismail/) · Founder, OpenExO · Co-wrote Exponential Organizations; was Singularity University's founding executive director; sold Ångströ to Google.
- Host: [Dave Blundin](https://realalpha.app/people/dave-blundin/) · Founder & GP, Link Ventures · Has co-founded 23 companies; founding CEO of Vestmark and chairman of insurance marketplace EverQuote.
- Host: [Alexander Wissner-Gross](https://realalpha.app/people/alexander-wissner-gross/) · Computer Scientist & Founder, Reified · Has backed and advised 40+ tech companies, directly and through 021T Capital and Reified; writes The Innermost Loop.
- Show: Moonshots
- Episode: [The Singularity Countdown: AGI by 2029, Humans Merge with AI, Intelligence 1000x | Ray Kurzweil](https://realalpha.app/v/8iWSNwIRazc/), Jan 20, 2026
- Moment: 22:17 to 29:23 of the episode (7 min), playing on https://realalpha.app/s/ai-consciousness-has-no-scientific-test-but-behavior-may/; the episode from there: https://realalpha.app/v/8iWSNwIRazc/?t=1337

## Quote

> “first of all, consciousness is a **subjective point of view**. There's nothing we can do scientifically to prove that an entity is conscious.”
> — [Ray Kurzweil](https://realalpha.app/people/ray-kurzweil/) at [22:48](https://realalpha.app/v/8iWSNwIRazc/?t=1368) · Moonshots

## Takeaways

1. Consciousness is subjective, with no scientific pass/fail test.
2. People infer consciousness from humanlike behavior.
3. Kurzweil expects acceptance after a few years of convincing AI.

## About this segment

Ray Kurzweil says consciousness cannot be measured scientifically, but people may accept AI as conscious after years of humanlike behavior. The exchange explores how social trust could move without a definitive test.

From “The Singularity Countdown: AGI by 2029, Humans Merge with AI, Intelligence 1000x | Ray Kurzweil”, Jan 20, 2026. [Watch the full episode](https://realalpha.app/v/8iWSNwIRazc/)

## Transcript

Transcribed by machine (Whisper) from the episode’s audio, so a word may be off here and there.

[22:30](https://realalpha.app/v/8iWSNwIRazc/?t=1350) There's a question that we've debated on this show and curious about your point of view, which is, are we going to actually achieve consciousness and sentience with AIs? And will they begin petitioning for personhood? And do you think society will approve that, that we're going to actually start to feel our AIs are conscious and sentient and we shouldn't shut them down and they're going to have rights like humans have? What's your feeling on all that?

[23:00](https://realalpha.app/v/8iWSNwIRazc/?t=1380) Well, first of all, consciousness is a subjective point of view. There's nothing we can do scientifically to prove that an entity is conscious. We can't have a machine, and you slide something in, and a light goes on. Oh, this is conscious. No, this isn't conscious. There's no scientific test for it. So some people, like, for example, Marvin Minsky, who was my mentor for 50 years, said, well, there's no scientific test for it.

[23:32](https://realalpha.app/v/8iWSNwIRazc/?t=1412) Therefore, it's not scientific. Therefore, we shouldn't deal with consciousness. It's a meaningful, meaningless debate. On the other hand, you could say it's the most important thing. Am I conscious? Are you conscious? I mean, that's something we really need to deal with. I need to be able to relate to you as if you are conscious. I consider myself to be conscious. And yet it's not scientific. My scientific test is I think I'm conscious, but my wife disagrees.

[24:08](https://realalpha.app/v/8iWSNwIRazc/?t=1448) So when she thinks I am, then I think I'll be there. Alex, you've been thinking a lot about this idea of personhood and consciousness. I'm a proponent, broadly speaking, of AI personhood. And I guess I'll play the contrarian role that I'm painted as of respectfully disagreeing with my friend Ray that there aren't benchmarks. I think there has been over the past two years marked progress toward developing quantitative benchmarks for call it self-awareness rather than consciousness, maybe slightly less mushy as a term, including, as I've pointed out in the past, tests for whether certain models can detect overlaid activations in their residual streams if they're transformers.

[24:56](https://realalpha.app/v/8iWSNwIRazc/?t=1496) I see progress toward developing real benchmarks. for self-awareness in models. Yes, but I'll give you something else that's even more perplexing. There's lots of conscious people. Now, I can't prove that you're conscious, but I believe that you are. I believe that a human being that acts conscious is probably conscious. But why do I have the consciousness I have? there's all these conscious beings but there's one person that i relate to that if something happens to it i care about it in a different way than i care about other people uh my own consciousness so why why am i conscious uh why was i born in 1948 why am i a male in on earth and why am I not another animal?

[25:57](https://realalpha.app/v/8iWSNwIRazc/?t=1557) I mean, why am I the person that I am? You could think the same thing about yourself, but it's a subjective view of consciousness. Why am I the person that I am? And that's really hard to explain. Why am I have all the earmarks of this particular person? Well, of course, Ray, it's such an ironic question that, in my mind, that you're asking an anthropic question. What you just posed, why am I myself, is the most fundamental anthropic, lowercase a, not capital A, question that one could ask.

[26:40](https://realalpha.app/v/8iWSNwIRazc/?t=1600) and why does the universe appear the way it does? And the usual answer is if the universe or your own identity had sufficiently different properties, you wouldn't be around to ask the question, why do I? It's very hard to even ask the question. People don't actually quite understand it. Maybe the most favorite comment you've ever made for me was we were at a group of singularity folks. We've had a couple of glasses of wine and somebody asked about consciousness and you said language is a very thin pipe to discuss concepts that are this complex.

[27:11](https://realalpha.app/v/8iWSNwIRazc/?t=1631) And it just blew everybody's mind. AIs will be indistinguishable from a conscious being and that will just keep going. And finally, we will accept it. When? When, Ray? Sam Holtman says, if you can't tell, why do you care? I might say that it's conscious. and you but people aren't really sure but eventually it keeps having all the earmarks of a conscious being and you will accept it because it'd be useless not to have it and again you can't say that's going to happen at the same time for everybody but I think when we're a few years into uh ai entities acting conscious uh we will accept it uh and so i i don't think it's going to be a very long delay well let's walk through that because the the outer bound of the day when when ais are acting conscious you can't even tell outer bound of that is 2029 i think

[28:18](https://realalpha.app/v/8iWSNwIRazc/?t=1698) and uh so you think a year or two later just because they're so convincing and so human-like that everyone will accept it because because you know they have weird behavior too they don't just act you know they somehow times they merge their brains together and they have combined personalities you know and so normal beings don't kind of do that so i could see a world where people are like this is just yeah it's acting very human but it's just too weird or i could see a world where Everybody just accepts it.

[28:46](https://realalpha.app/v/8iWSNwIRazc/?t=1726) I mean, today people have AI therapists, and sometimes they don't really believe it, but in other times people really believe it, and the AI therapists, if you read the transcripts, they sound very convincing, and that's going to keep going, and people will really accept that they have a therapist that's conscious, and that's already beginning to happen.