PubHawk
August 2009 PMID 19792156

Penrose-Hameroff orchestrated objective-reduction proposal for human consciousness is not biologically feasible.

Laura K McKemmish, Jeffrey R Reimers, Ross H McKenzie, Alan E Mark, Noel S Hush

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Mentions

14
Peak: 2 in May 2024
across 4 sources since Jun 2018

Extended reach

36,220
potential audience

Total likes

161

Video views

6,093

Mentions per month

Jun 2018 – Oct 2025

Where it's discussed

  • X / Twitter6 posts
  • Blogs4 articles
  • YouTube2 videos
  • News2 articles

AI synopsis

What people are saying

The overall tone leans heavily towards disagreement, as many discussions highlight that the model is 'not biologically feasible' and question its scientific validity, using words like 'unusual,' 'wrong,' and 'not justified.' The tone varies from dismissive to mildly engaged, with critics referencing recent studies and the lack of empirical support to argue against the model's credibility.

AgreementStrong disagreement

Most discussions strongly oppose the feasibility of the Orch OR model, emphasizing skepticism about its biological basis.

InterestNeutral interest

Participants are somewhat interested in the debate but not deeply engaged beyond expressing opinions.

EngagementModerate engagement

Several users reference specific scientific critiques or lack of evidence, indicating a moderate level of engagement.

ImpactLow impact

The discussions suggest some influence on the perception of the theory, but no indication of widespread or transformative impact.

Abstract in brief

  • The Orch OR model by Penrose and Hameroff suggests that microtubules in neurons function as quantum processors, which is essential for understanding human consciousness.
  • Recent experimental studies indicate that tubulin proteins in microtubules lack the properties necessary for sustained quantum coherence, challenging the biological plausibility of the Orch OR proposal.
  • The current understanding of biological systems also shows no evidence of long-lived quantum coherence that would support the Orch OR model, leading to the conclusion that it is not a feasible explanation for consciousness.
Read the full abstract

Top posts

Most liked on X and Bluesky
Prof. Tim Schmidt
@schmidtim · X

@PalliThordarson @timgould_scienc @skdh It’s unusual at room temperature. I never really got the Penrose thing, or Laura and Jeff’s take down of it. https://t.co/U665IqhQNS

May 17, 2024 · 3 likes · 1 share · 8,727 followers View post →
Zeptej se vědce
@Zeptej_se_vedce · X

Citované zdroje

Mar 24, 2022 · 2 likes · 16,623 followers View post →
Jeff N
@JeffNFox · X

@Hagahoonda @MungoManic @AgentUnatco @Nero Not biologically feasible https://t.co/qUra2KOHPJ

Oct 18, 2025 · 1 like · 45 followers View post →
Jahan Dawlaty
@JahanDawlaty · X

RT @schmidtim: @PalliThordarson @timgould_scienc @skdh It’s unusual at room temperature. I never really got the Penrose thing, or Laura and…

May 17, 2024 · 1 share · 2,825 followers View post →
Rosa Rubicondior
@RosaRubicon · X

@Freewillburnya @GlennB10809975 @GodIfound @Jaxhomegirl @MovingEternity @JustSayingWhat1 @SariellaHerself @imkimaaron @Mental_Universe @NoScienceDenial @badgervindaloo @DriftlessProf @dougstone2019 @Melanie33720945 @A_Draeros @TakeThatEpi @TertiusIII @TheGod_Particle @BabeTruth2 @rjmx @M0sstr00per @ColinCDawson @Catheri77148739 @andyguy @odktiger @SlsStudios @GabrielF1510 @Tsunami_64 @Ponygal923 @JoJo89900035 @mirandadied4u @hotgirlspotted @Sicut_Lupus @Ophlie24371321 @DavidSkelton909 @IngridIngwah @malo_j @Obsidian2_3000 @stevensoileau1 @jools6691 @WmManry @thex_wall @DeanPHanley @SnowWulfX @impeachqueen @Canna420Uk @Onychom @bhaddiexgrande @HazyPeter @EcoEvoDevo The Revised Penrose-Hameroff Orchestrated Objective-Reduction Proposal for Human Consciousness Is Not Scientifically Justified: Comment on "Consciousness in the Universe: A Review of the 'Orch OR' Theory" by Hameroff and Penros

May 13, 2020 · 1,861 followers View post →
Trumpi Nator
@trumpi_nator · X

@coffeewillhelp @DiscoverMag Yes but i cant find the study u mentioned, so this is also wrong: https://t.co/5ECPloKCDA ?

Nov 30, 2020 · 42 followers View post →

All mentions

Jeff N
@JeffNFox · X

@Hagahoonda @MungoManic @AgentUnatco @Nero Not biologically feasible https://t.co/qUra2KOHPJ

Oct 18, 2025 · 1 like · 45 followers View post →
Jahan Dawlaty
@JahanDawlaty · X

RT @schmidtim: @PalliThordarson @timgould_scienc @skdh It’s unusual at room temperature. I never really got the Penrose thing, or Laura and…

May 17, 2024 · 1 share · 2,825 followers View post →
Prof. Tim Schmidt
@schmidtim · X

@PalliThordarson @timgould_scienc @skdh It’s unusual at room temperature. I never really got the Penrose thing, or Laura and Jeff’s take down of it. https://t.co/U665IqhQNS

May 17, 2024 · 3 likes · 1 share · 8,727 followers View post →
Zeptej se vědce
@Zeptej_se_vedce · X

Citované zdroje

Mar 24, 2022 · 2 likes · 16,623 followers View post →
Trumpi Nator
@trumpi_nator · X

@coffeewillhelp @DiscoverMag Yes but i cant find the study u mentioned, so this is also wrong: https://t.co/5ECPloKCDA ?

Nov 30, 2020 · 42 followers View post →
Rosa Rubicondior
@RosaRubicon · X

@Freewillburnya @GlennB10809975 @GodIfound @Jaxhomegirl @MovingEternity @JustSayingWhat1 @SariellaHerself @imkimaaron @Mental_Universe @NoScienceDenial @badgervindaloo @DriftlessProf @dougstone2019 @Melanie33720945 @A_Draeros @TakeThatEpi @TertiusIII @TheGod_Particle @BabeTruth2 @rjmx @M0sstr00per @ColinCDawson @Catheri77148739 @andyguy @odktiger @SlsStudios @GabrielF1510 @Tsunami_64 @Ponygal923 @JoJo89900035 @mirandadied4u @hotgirlspotted @Sicut_Lupus @Ophlie24371321 @DavidSkelton909 @IngridIngwah @malo_j @Obsidian2_3000 @stevensoileau1 @jools6691 @WmManry @thex_wall @DeanPHanley @SnowWulfX @impeachqueen @Canna420Uk @Onychom @bhaddiexgrande @HazyPeter @EcoEvoDevo The Revised Penrose-Hameroff Orchestrated Objective-Reduction Proposal for Human Consciousness Is Not Scientifically Justified: Comment on "Consciousness in the Universe: A Review of the 'Orch OR' Theory" by Hameroff and Penros

May 13, 2020 · 1,861 followers View post →