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The 21 Grams experiment that tried to weigh a human soul

https://www.popsci.com/science/21-grams-experiment/
1•stareatgoats•1h ago

Comments

codingdave•1h ago
I love reading about this experiment, and all the reactions over the years. But I have yet to see anyone question the underlying premise that there is a specific "moment of death". Based on my (admittedly layman's) understanding, death is a process, not a moment.

Of course, having said that out loud, odds are someone will be along shortly to cite people who have already said so.

stareatgoats•39m ago
A repeat of this experiment, with a few thousand participants, conducted under strict control would probably settle that question. One can't help wonder, why hasn't this been done?

I guess ethical and practical considerations aside (you'd have to find participants that agreed to the experiment, as well as having no grieving and potentially experiment-disturbing kin by the bedside): conducting such experiments would not earn you any positive citations from other scientists who largely try to steer clear of anything that smacks of spirits.

Plus, what if Duncan MacDougall's claim is proven correct?

_wire_•51m ago
Why not examine the inverse, weigh a human egg as it's fertilized...

Oh, wait, this whole 21-grams idea is obviously absurd

Design Tradeoffs at the Edge

https://www.usenix.org/publications/loginonline/lessons-operating-large-scale-reverse-proxy
1•miggy•5m ago•0 comments

Ask HN: Looking for an Invite for Lobster.rs

1•MD3XTER•6m ago•0 comments

EC DMA Compliance Workshops

https://f-droid.org/2025/09/18/ec-dma-compliance-workshops.html
2•LorenDB•6m ago•0 comments

Water expert's nomination scrapped as states hash out Colorado River plan

https://apnews.com/article/bureau-of-reclamation-water-colorado-river-cooke-f80fe6d4e3f86ef937599...
1•petethomas•10m ago•0 comments

Diacritics restoration: can we do better with neural networks and deep learning?

https://ileriseviye.wordpress.com/2020/10/22/diacritics-restoration-can-we-do-better-using-neural...
1•sedatk•13m ago•0 comments

Scaling Carbon Capture to Billions of Tonnes

https://spectrum.ieee.org/scaling-carbon-capture-technology
2•WaitWaitWha•14m ago•0 comments

Break down silos with a walking skeleton

https://henko.net/blog/break-down-silos-with-a-walking-skeleton/
2•henrikje•14m ago•0 comments

Christianity "Borderline Illegal" in Silicon Valley. Now It's the New Religion

https://www.vanityfair.com/news/story/christianity-was-borderline-illegal-in-silicon-valley-now-i...
2•mgh2•15m ago•2 comments

RCA VideoDisc's Legacy: Scanning Capacitance Microscope

https://spectrum.ieee.org/rca-videodisc
2•WaitWaitWha•19m ago•1 comments

Show HN: dumpall — Dump project code into AI-ready Markdown

https://dumpall.pages.dev
1•ThisIsntMyId•20m ago•0 comments

Driven to Default: The Economy-Wide Risks of Rising Auto Loan Delinquencies

https://consumerfed.org/reports/driven-to-default-the-economy-wide-risks-of-rising-auto-loan-deli...
2•rntn•22m ago•0 comments

SWE-Bench Failures: When Coding Agents Spiral into 693 Lines of Hallucinations

https://www.surgehq.ai/blog/when-coding-agents-spiral-into-693-lines-of-hallucinations
7•landonxi•26m ago•0 comments

Meta's live staged demo fails; the "AI" recording plays before the actor acts

https://old.reddit.com/r/LivestreamFail/comments/1nkbig7/metas_live_staged_demo_fails_the_ai_reco...
6•personjerry•27m ago•0 comments

Bravo Apple! Calculator app has a memory leak

https://twitter.com/neogoose_btw/status/1968757466570621251
2•pfexec•28m ago•1 comments

Should AI Be Listed as a Co-Author in Your Git Commits?

https://www.dariuszparys.com/should-ai-be-listed-as-a-co-author-in-your-git-commits/
1•rbjorklin•29m ago•1 comments

Show HN: Distributed Rate Limiter – 50K+ RPS, Redis-Backed, Production-Ready

https://github.com/uppnrise/distributed-rate-limiter
2•uppnrise•30m ago•0 comments

Evolving the Multi-User Spaceport

https://www.spacex.com/updates#multiuser-spaceport
1•LorenDB•31m ago•0 comments

Figma Rendering: Powered by WebGPU

https://www.figma.com/blog/figma-rendering-powered-by-webgpu/
1•emschwartz•33m ago•0 comments

Cybercriminals Have a Weird New Way to Target You with Scam Texts

https://www.wired.com/story/sms-blasters-scam-texts/
6•jaredwiener•35m ago•0 comments

Meta now officially regulates itself

https://noyb.eu/en/former-meta-lobbyist-named-dpc-commissioner-meta-now-officially-regulates-itself
5•Improvement•35m ago•0 comments

The security of SSH client signatures

https://arxiv.org/abs/2509.09331
1•fanf2•36m ago•0 comments

Macron and wife to present scientific evidence proving she is a woman

https://english.elpais.com/international/2025-09-18/emmanuel-macron-and-his-wife-to-present-scien...
6•geox•36m ago•0 comments

Show HN: We made people in the cloud with phone and email to do your work

https://www.withtime.ai
3•notanaiagent•37m ago•0 comments

Robotic assembly lines gain flexibility as algorithm plans tasks, teams, layouts

https://techxplore.com/news/2025-09-robotic-lines-gain-flexibility-algorithm.html
1•Teever•39m ago•0 comments

What if AMD FX had "real" cores? [video]

https://www.youtube.com/watch?v=Lb4FDtAwnqU
1•zdw•40m ago•0 comments

State media (owned, operated, or significantly influenced by the government)

https://en.wikipedia.org/wiki/State_media
7•cs702•42m ago•0 comments

Show HN: SomeWeek – Using ChatGPT and Twilio as an accountability coach

https://someweek.com
1•cosbgn•42m ago•0 comments

Spatial Openness and Visual Perception in Historic Urban Environments

https://www.mdpi.com/2075-5309/15/18/3295
1•PaulHoule•43m ago•0 comments

Autobot platform uses machine learning to find ways to make advanced materials

https://techxplore.com/news/2025-09-autobot-platform-machine-rapidly-ways.html
1•Teever•44m ago•0 comments

FusionAuth vs. MS Entra – what I learned when implementing auth

https://bunnysblog.onrender.com/blog/68b2109106386274d1239cc2
1•mooreds•45m ago•0 comments