Insights

Brilliant and human: the rivalries, luck and quirks behind physics' giants

Jed Buchwald brings out Newton's rivalries and jealousy, Bernardo Huberman says great scientists are brilliant and human, Jim Gates tells how luck helped Einstein, Feynman recalls facing the monster minds of his day, and Oppenheimer's biographers show a contradictory genius. Seeing the people behind the discoveries shows that science advances through flawed individuals, not flawless oracles.

18 min read

Listening to spacetime: how gravitational waves opened a new kind of astronomy

Barry Barish explains how LIGO measures a stretch smaller than a thousandth of a proton and calls the result a new kind of astronomy, Michelle Thaller explains what gravitational waves reveal, and Brian Keating recounts the hunt for gravitational waves from cosmic inflation. Together they show how ripples in space became a tool for observing the universe, from black holes to its first moments.

26 min read

Code is written for people: Knuth, Guido and the Hitchhiker's Guide on readability

Donald Knuth explains in two conversations why he writes programs as literature through literate programming, Guido van Rossum describes programs as recipes written for two audiences and digs into code readability, and The Hitchhiker's Guide to Python devotes its core chapters to writing and reading great code. Treating the human reader as the main audience changes how programmers name, structure and explain their work, and makes code easier to maintain.

Software Engineering

18 min read

Why AI runs on Python: NumPy's creator, Anaconda's CEO and Mojo's designer explain

Travis Oliphant tells how NumPy united a split community and became the foundation of array and tensor computing in Python, Peter Wang explains what made him fall in love with Python and why the scientific Python stack emerged as it did, and Chris Lattner builds Mojo as a superset of Python because of Python's strengths. Their accounts explain how a language designed for readability ended up as the working language of science and AI, and what its builders are doing about its speed.

Software Engineering

24 min read

Melatonin as the body's calendar: light, seasons and mood

Andrew Huberman's light episodes describe melatonin as the body's seasonal calendar, his episode on time perception calls circannual entrainment a calendar written in melatonin, his office-hours answers link seasons, melatonin, serotonin and mood, and Samer Hattar takes up night waking, melatonin and seasons with him. Seeing melatonin as a signal of the time of year, not just a sleep switch, helps explain why mood shifts with the seasons.

21 min read

Insight·Oct 12, 2026

Your circle is your ceiling: who to keep close and who to let go

Trent Shelton calls your circle the biggest barrier and names four kinds of people you can't be friends with, Mel Robbins tells people in their 20s that their circle is their wealth, behavioral scientist Katy Milkman ties belief and identity to the people around you, Lewis Howes says to get into rooms where you are the least successful person, and creator Josh Richards keeps his circle small on purpose. Together they treat the people around you as something you choose, which makes pruning and upgrading a circle a practical step and not a betrayal.

The 95 percent claim: how coaches say childhood programming runs adult life

Bruce Lipton says the subconscious is programmed mostly before age seven and then runs about 95% of daily behavior, and Peter Crone, Bob Proctor, Jim Curtis, Katie Clarke, Aaron Doughty and Shiv Khera each build their teaching on a version of the same idea, with their own methods for rewriting the program. Seeing who makes the claim and what each proposes to do about it helps a reader weigh why willpower alone so often fails and which of these methods is worth trying.

Useful delusion and useful denial: when irrational belief helps performers

Magnus Carlsen talks about the value of delusion, director Peter Berg pairs discipline with delusion for careers in the arts, Bill Perkins credits delusion with breaking his sense of scarcity, Matthew McConaughey defends the surprising value of denial, Liv Boeree discusses useful fictions, and neuroscientist Emily McDonald separates law-of-attraction belief from delusion. Their accounts mark out when believing ahead of the evidence helps someone start and persist, and where it tips into self-deception.

Is spacetime fundamental, or does it emerge from something deeper?

Donald Hoffman argues spacetime falls apart at the Planck scale, Annaka Harris explores emergent space-time, and Andrew Strominger and Sean Carroll explain how the holographic principle hints that space is not basic. The convergence from philosophy and physics suggests the stage of reality may itself be a derived thing.

16 min read

Racing mind at bedtime: wind-down rituals that quiet the brain

Rebecca Robbins, Mel Robbins, Gina Poe and Walker each recommend a deliberate buffer before bed, from a fixed wind-down ritual to phrases and tasks that get the mind off itself. The common thread is that sleep cannot be forced, only prepared for.

Too much sleep: when long nights are a warning sign

Walker and Attia both address oversleeping, noting that very long sleep is often a marker of poor sleep quality, illness or depression. It corrects the idea that more time in bed is always better.

13 min read

Confidence and Self Doubt

Responsibility is not blame: leaving victimhood without attacking yourself

Therapist Kier Gaines sets accountability against blame, Chris Lee says taking responsibility is not the same as blaming yourself, Gary John Bishop argues it is not what happened but what you decided afterward, Gary Vaynerchuk counts the cost of blaming parents, Edith Eger separates being victimized from being a victim, and Bruce Lipton and Peter Sage each describe the move out of a life that happens 'to me'. The distinction matters because people often avoid ownership when it sounds like fault, and it is ownership that gives them something to do next.

Mindset

29 min read

Behaviors first, then magnesium, apigenin and theanine: the sleep supplement order

Huberman's sleep toolkit and supplement framework and Walker's review of the evidence agree that supplements come after light, timing and temperature, and that the options should be tried one at a time. It gives readers a sober way to judge sleep products without relying on melatonin.

27 min read

Sleeping on a problem: how dreams and REM produce creative answers

Walker, Poe, Jandial and Rick Rubin describe sleep as a state in which the brain links distant ideas, which is why solutions and new ideas often appear after a night's sleep or on waking. It gives creative workers a reason to capture ideas on waking and to schedule hard problems before sleep.

17 min read

Confidence and Self Doubt

Do affirmations work? Values, self-love and what skeptics say

Amy Cuddy says to affirm your values and not your greatness, neuroscientist Emily McDonald explains what affirmations do in the brain, Rana el Kaliouby credits journaling and affirmations with getting her past self-doubt, Mel Robbins scripts sentences for bedtime and morning, and Bruce Lipton argues that positive thinking alone fails against subconscious programs. Set together they show which kinds of self-statement have support and why repeating flattering lines often changes nothing.

Mindset

Confidence and Self Doubt

The money beliefs you inherited as a child, and how to rewrite them

Lewis Howes lists five money beliefs people absorb in childhood, Sharran Srivatsaa traces where his own came from, Jamie Sea describes money shame held in the body, David Bayer ties money beliefs to a core program, Peter Sage talks about a financial thermostat, Bruce Lipton links money to early programming, and George Kamel says wealth is more about identity and behavior than income. If an unchosen childhood script sets the ceiling, the work begins with naming that script before changing any tactic.

Mindset

23 min read

Self-hypnosis for insomnia: a tool for falling back asleep

Psychiatrist David Spiegel describes clinical hypnosis as a way to calm the body and return to sleep, and Huberman uses hypnosis as a deliberate rest tool in his own routine. It offers a drug-free option for people whose problem is an overactive mind at night.

15 min read

How to get more deep sleep: the few things that move it

Huberman's answers on slow-wave sleep and Walker's account of what deep sleep does point to the same short list: remove alcohol, late caffeine and late meals, time exercise well and keep the timing of sleep steady. Deep sleep carries growth hormone release and physical repair, so it is worth protecting directly.

When you train shapes how you sleep: exercise timing rules

Andy Galpin, Walker, Hattar and Huberman discuss how morning or afternoon exercise supports sleep while late, stimulant-fueled sessions can delay it. For people who can only train at night, they describe how to limit the damage.

The discipline of doubt: how physicists handle results they badly want true

Brian Keating watched a Nobel-level claim dissolve into galactic dust, David Kipping refused to call his best exomoon signal a discovery, and Andrew Strominger treats being wrong as the normal cost of doing physics. Only one of the three results was actually withdrawn, but together they show the habits careful researchers use against their own hopes.

21 min read

Is reality a simulation? The claim, the arguments and the doubts

Thomas Campbell asserts that reality is a computed virtual world, Donald Hoffman likens perception to a headset, and David Kipping and Sean Carroll examine the simulation argument more skeptically. Setting the claims against the criticisms shows what would count as evidence and what is still speculation.

22 min read

Three physicists on cooperation between rivals, from fusion to nuclear restraint

Dennis Whyte shows that rival powers have shared fusion science since the Cold War and still build ITER together, while Carlo Rovelli and Max Tegmark point to the treaties, weapons bans and individual acts of restraint that kept nuclear rivals from destroying each other. Together they argue that cooperation between enemies has a real record, and they are frank about its costs: slow megaprojects and far too much reliance on luck.

17 min read

Don't Trust Your Sleep Score Too Much: Poe, Huberman and Attia on Trackers

Gina Poe and Andrew Huberman say consumer trackers only estimate sleep stages, about 70% accurate at best, and that the score itself changes how rested people feel the next day. All three still use trackers, and advise reading the numbers as averages and prompts to adjust habits, next to how your body actually feels.

15 min read

Is six hours enough, and can you recover from years of short sleep?

In live Q&As and with Walker, Huberman takes up how much sleep individuals really need, whether lost sleep can be made up and what improves after years of short nights. The answers replace a single eight-hour rule with a way to judge personal need.