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Vol. 04 · Spring 2026

The sciences
that shape what
comes next.

Cogitra reports the frontiers of artificial intelligence, health, biology, and genetics — slowly, in depth, and with the assumption that you have time to read.

Explore Articles About Cogitra
3 Essays · 2026
8 Book Reviews
9 Sections
Sections 09 fields of study
01
Artificial Intelligence
Machine learning, deep learning, research, tools, and trends.
02
Physical Health
The body, its diseases, the medicine, and the institutions around them.
03
Mental Health
Depression, anxiety, trauma, therapy, psychiatry, and what we now know about caring for the mind.
04
Biology
Cells, evolution, ecology, and biotechnology.
05
Mindset
Cognition, attention, and the inner life of the thinker.
06
Genetics
Genomics, gene editing, CRISPR, heritability, and beyond.
07
Longevity
Aging, senescence, and the long arithmetic of human time.
08
Physics
Cosmology, particles, condensed matter, and first principles.
09
Book Review
Long reads on long books — fiction and nonfiction, considered slowly.

Featured articles

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AI Long read
May 17, 2026 · 17 min read

Transformers and the Coming of AGI: What Geoffrey Hinton Says

How the transformer architecture — built on Geoffrey Hinton's 1984 word prediction idea — triggered the AI revolution, and what Hinton and his peers now say about AGI arriving wit…

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Health

Mechanistic Health Guides

All topics →
Cancer Biology

Sapolsky on Sexual Orientation: How the Limbic System Differentiates

Robert Sapolsky's lecture on the biology of sexual orientation distills behavioral genetics, the LeVay INAH-3 finding, the prenatal hormone window, and the fraternal-birth-order effect into one careful answer: orientation reflects how the limbic and hypothalamic circuitry differentiates before birth, in ways the person did nothing to choose.

6 min read
Autoimmune Disease

Antiphospholipid Syndrome: The Clotting Disorder No One Sees Coming

Antiphospholipid syndrome is an autoimmune thrombophilia: antibodies directed at phospholipid-binding proteins trigger clotting in arteries and veins throughout the body. It is the most common acquired cause of recurrent miscarriage and unexplained stroke in young adults, yet most patients have no warning before the first thrombotic event.

6 min read
Autoimmune Disease

Myasthenia Gravis: When Signals Can No Longer Reach the Muscles

Myasthenia gravis is caused by antibodies that block acetylcholine receptors at the neuromuscular junction. The nerve fires normally, but the signal cannot be received by the muscle. The hallmark is fatigable weakness — muscles that work at rest but fail progressively with use.

6 min read
Autoimmune Disease

Vitiligo: The Immune System Erases the Skin's Color

Vitiligo is the selective destruction of melanocytes — the cells that produce skin pigment — by cytotoxic CD8+ T-cells that recognise melanocyte antigens as foreign. The resulting depigmented patches are a visible record of an ongoing immune assault on a completely harmless cell type.

6 min read
Autoimmune Disease

Ankylosing Spondylitis: When the Spine Fuses Itself Shut

Ankylosing spondylitis targets the sacroiliac joints and spine with a unique perversity: instead of merely destroying joints, it replaces them with new bone. The final outcome, without treatment, is a fused, immobile spine — the "bamboo spine" of advanced disease.

6 min read
Autoimmune Disease

Sjögren's Syndrome: The Slow Drying Out of Glands

Sjögren's syndrome targets the exocrine glands — particularly the salivary and lacrimal glands — with lymphocytic infiltration that destroys the cells responsible for producing saliva and tears. The resulting dryness is progressive, and the systemic inflammation extends beyond the glands.

5 min read
Autoimmune Disease

Celiac Disease: How Gluten Destroys the Intestinal Villi

Celiac disease is the one autoimmune condition with a completely identified dietary trigger: gliadin, the alcohol-soluble fraction of wheat gluten. In genetically susceptible individuals, gliadin initiates an immune cascade that flattens the intestinal villi and impairs absorption of nearly every nutrient.

6 min read
Autoimmune Disease

Psoriasis: The Skin That Cannot Stop Growing

Psoriasis is driven by IL-17 and IL-23 cytokines that lock the skin into a state of hyperproliferation. Keratinocytes that normally renew over 28 days complete the cycle in 3–4 days, piling up as the characteristic silver-scaled plaques of the disease.

6 min read
From the editor's letter
“Cogitra is for readers who haven't given up on the long form — on the idea that a science worth following is worth following slowly, on purpose, with the time a real argument deserves.”
— Sasha Lin, Editor-in-Chief
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