David Sussillo (on foster care and neuroscience)

March 25, 2026

AI Summary

5 min read

David Sussillo recounts his journey from severe childhood neglect and institutional group homes to becoming a leading computational neuroscientist at Meta, weaving personal hardship with insights on brain development, foster care failures, and AI's roots in neural networks. His memoir Emergence details how poverty, parental addiction, and systemic gaps shaped his path, echoing a prior podcast episode on foster care with Claudia Rao.

Roots in Addiction and Neglect

Sussillo's parents, both addicts—his father heroin-dependent from age 15, his mother depressed and abusing pills—divorced after a suicide attempt when he was five. Living in extreme U.S. poverty in Santa Fe and Albuquerque's "war zone," constant anxiety over food and basics eroded stability. His mother entered a nursing program but relapsed; a caretaker's intervention led grandparents to place Sussillo and sister Esther in Albuquerque Christian Children's Home (ACCH) at age eight. Grandparents, retirees overwhelmed by prior family burdens, opted for the home over taking them in—a decision Sussillo views as negligent abandonment, though he notes their fatigue after years of exposure to his mother's issues.

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What you'll learn

1 (00:00) **Intro and Foster Care Connection** - Hosts introduce David Sussillo and link episode to Claudia Rao's foster care story.
2 (03:03) **Claudia Rao Episode Reflections** - David praises Rao episode for capturing foster care realities like poverty-driven placements.
3 (04:04) **David's Current Life and Career** - Bay Area resident near Stanford, adjunct professor, Google Brain to Meta Reality Labs.
4 (08:22) **Early Childhood Trauma** - Parents as Christian hippies turned addicts; divorce after dad's suicide attempt at age 5.
5 (12:05) **Santa Fe Poverty and Friendship** - Extreme poverty with mom; meets best friend Shiloh, obsessed with video games as escape.
6 (15:19) **War Zone Move and Entry to Christian Home** - Back to Albuquerque "war zone"; mom's depression leads to neglect, caregiver calls grandparents.
7 (20:17) **Life in ACCH: Lost and Dysregulated** - Feels perpetually lost like at mall; high staff turnover erodes care and history knowledge.

+ Full timestamped outline available in the app

Show Notes

David Sussillo (Emergence: A Memoir of Boyhood, Computation, and the Mysteries of Mind) is a technologist, neuroscientist, and professor at Stanford University. David joins the Armchair Expert to discuss growing up with two parents that were addicts, experiencing extreme poverty throughout his childhood, and the joy of finding a best friend during that time. David and Dax talk about how the immersion and rules of video games amid the chaos of his life became the precursor to his research today, ending up in a series of group foster homes for several years, and his dream of going to college functioning as a protective shield for his future self. David explains being orphaned by the living while in foster care, the elation of receiving a full ride to Carnegie Mellon to study computer science, and the deep learning neural network research he now leads at Stanford.

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