Carsten T. Charlesworth, Henry T. Greely and Hiromitsu Nakauchi argue in MIT Technology Review for “spare” bodies

Carsten T. Charlesworth, Henry T. Greely and Hiromitsu Nakauchi argue in MIT Technology Review for “spare” bodies

The November sixth, twenty twenty-five edition of MIT Technology Review features Carsten T. Charlesworth, Henry T. Greely and Hiromitsu Nakauchi’s argument that a severe shortage of ethically sourced human bodies contributes to challenges in medicine. They say recent biotechnology advances provide a pathway to producing living human bodies without the neural components that allow thought, awareness or pain. The authors acknowledge that many will find this possibility disturbing. Their proposal is conditional: if researchers and policymakers can bring these technologies together, they say, people may one day be able to create “spare” bodies, both human and nonhuman. The excerpt does not explain how such bodies would be produced or what ethical safeguards their creation would require. The authors present this possibility as a response to a moral and scientific deadlock, while leaving its practical and ethical requirements unspecified.

Publication: 4acebeab-4efb-3185-45a9-8062d4f0676b

attribution — uncertain: The source is one newsletter issue, The Download, and the cited passage is a short blurb under 'One more thing' with the three authors' byline. The reading says 'they say' and 'the authors acknowledge' as if quoting their full article. The blurb may be the newsletter's own summary of their story rather than their words. Smallest repair: say the newsletter's blurb summarizes their story.

—Carsten T. Charlesworth, Henry T. Greely & Hiromitsu Nakauchi

summary — uncertain: The reading treats a brief recommendation at the end of a multi-item newsletter as if it were the edition's argument. The issue's main items, on medical conspiracy theories, the AI footprint and Quantinuum's Helios, go unmentioned. The reading also never says how 'spare' bodies relate to AI or this stream's scope, so a general reader cannot see the significance. The reading accurately conveys the blurb's conditional framing and the authors' acknowledgment that the idea is disturbing. Smallest repair: identify it as a featured item in the 'One more thing' section and state the fit question.

One more thing Ethically sourced “spare” human bodies could revolutionize medicine

date — uncertain: The newsletter date of November 6, 2025 is the UTC day of evidence.originalPublished. modifiedAt (12:35 UTC) precedes the publication time, so no later edit is implied. However, the 'One more thing' slot links to the authors' full story, whose first publication date the evidence does not give and which may be earlier. Displaying November 6, 2025 as the date of the authors' argument may therefore misdate it. The later 'Deep Dive' sidebar items are not used. The archive disclosure is not required for a publisher page.

Many will find this possibility disturbing

support — pass: All three claims match their verbatim excerpts. The reading preserves the 'in large part' and 'may one day' conditions, and its limitations correctly note that the blurb gives no methods or safeguards. The question follows from the stated gap and does not assume any benefit.

Recent advances in biotechnology now provide a pathway to producing living human bodies without the neural components that allow us to think, be aware, or feel pain.

media — pass: No media is selected, and no verified candidates were supplied. That is appropriate.