The hottest Memory Substack posts right now

And their main takeaways
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Top Science Topics

The Great AI Silicon Shortage

SemiAnalysis • 11314 implied HN points • 12 Mar 26
🕹 Technology Memory
  1. Advanced 3nm (TSMC N3) wafer capacity is deeply constrained because most leading AI accelerators are moving to N3, so compute deployments are bottlenecked and TSMC is prioritizing AI customers which may push others to diversify to Samsung or Intel.
  2. Memory is the next big bottleneck: HBM demand is surging, it consumes far more wafer capacity per bit than commodity DRAM, and higher HBM pin-speed requirements plus rising DRAM prices mean suppliers will struggle to meet accelerator needs without charging premiums.
  3. A small release valve exists if smartphone demand falls (freeing some N3 wafers) and CoWoS packaging constraints are easing, but memory, datacenter power, and packaging limits mean hyperscalers’ higher capex won’t immediately solve the compute shortage.

CONFEDERATE MOUND VISIT

THREE SEVEN MAFIA • 819 implied HN points • 27 Oct 24
💾 History Memory
  1. Visiting historical sites can help us understand the past better. It's important to learn about different perspectives from history.
  2. Reflecting on events from history allows us to consider their impact on today's society. Understanding our history shapes who we are.
  3. Talking about historical figures and events helps keep the conversation going. It helps us engage with one another about common topics in our shared history.

Memory Mania: How a Once-in-Four-Decades Shortage Is Fueling a Memory Boom

SemiAnalysis • 15153 implied HN points • 06 Feb 26
🕹 Technology Memory
  1. Memory prices are skyrocketing in a big, AI-driven supercycle and the shortage looks like it hasn’t peaked yet.
  2. DRAM scaling has slowed because of physical and process limits, so cost-per-bit improvements are much smaller and technology no longer reliably drives deflation.
  3. Memory supply is slow to change and very capex-intensive, and with fewer suppliers plus disciplined capex and massive AI demand, the shortage is harder to fix and could last longer.

George Steiner breaking my heart with his description of the way people used to memorise poems, Bible passages, classic works.

The Common Reader • 4536 implied HN points • 23 Feb 26
📚 Literature Memory
  1. Memorising poetry and classic texts used to be central to educated life, giving people a shared store of quotations and echoes that shaped public speech and culture.
  2. That routine memorisation has largely faded in modern schooling and many teachers no longer practise it, though pockets of the habit survive in some places and among some people.
  3. Making a personal effort to memorise poems and to copy out passages (ruminatio) deepens understanding of texts and is a worthwhile, rewarding practice to revive.

1,000 CFETs, SK Hynix Next-Gen NAND, Interconnects Beyond Copper, 2D Materials, and More

SemiAnalysis • 9799 implied HN points • 13 Jan 26
🕹 Technology Memory
  1. 3D NAND makers are still squeezing more bits by adding layers and decks; SK Hynix’s 321-layer V9 boosts capacity a lot and its multi-site 5-bits-per-cell idea shows big logical-density potential, but these tricks add serious process complexity and cost.
  2. Metals are changing to beat copper limits: Samsung is using molybdenum to cut wordline resistance in NAND, and ruthenium is emerging for ultra-fine interconnects with textured ALD that can greatly lower line resistance at tiny pitches.
  3. Two-dimensional materials keep promise for sub‑10 nm logic because they reduce source‑to‑drain tunneling, but real-world barriers—wafer‑scale integration, low‑bias contacts (especially p‑type), variability, doping methods, and modeling—still need to be solved before they become manufacturable.
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Watching the Olympics in Ukraine

Thinking about... • 445 implied HN points • 21 Feb 26
🌍 World Politics Memory
  1. War shapes even leisure: air-raid sirens, power cuts, and the deaths of athletes make watching the Olympics in Ukraine a precarious and poignant experience.
  2. Ukrainian coverage feels human and unscripted, offering small comforts and clear explanations that let viewers actually enjoy the sports while personal stories remind us of the wider sacrifice.
  3. Remembering others’ suffering and practicing empathy are essential to freedom; when a society cares only about winning or outcomes it risks tolerating indifference and empowering tyrants.

Life and Death and Other Numbers

Thinking about... • 332 implied HN points • 24 Feb 26
🌍 World Politics Memory
  1. Numbers can show the scale of death, but each number is a unique person with a life and relationships that statistics cannot capture.
  2. Anniversaries and counts risk turning loss into an abstraction and can let individuals and states avoid moral responsibility.
  3. The war’s length and size are the result of ongoing political and economic choices, so ending it depends on changing those choices and actions.

Glory days

Disaffected Newsletter • 1998 implied HN points • 15 Aug 24
🎭️ Culture Memory
  1. Some older people are still stuck in the past, thinking their youth and ideas from the 1960s still represent today's reality.
  2. Many friends love to share nostalgic stories about their past activism, but they sometimes seem more about reliving glory than promoting understanding.
  3. People who change their political views often feel pushed away by their former friends, showing that kindness fades when faced with disagreement.

The End of an Era

In Bed With Social • 376 implied HN points • 02 Oct 24
🎭️ Culture Memory
  1. Grief can make us feel heavy and sad, but it also helps us understand what really matters in life. When we lose someone, we start to see everything more clearly and value the little moments.
  2. Technology tries to help us hold on to our loved ones, but it's not the same as real love. We can't replace the feelings we have with digital copies or memories; we need to accept the loss and let love evolve.
  3. True strength comes from learning to live with the idea of impermanence. It’s important to make space for grief, knowing that love will still exist in our memories and shape who we are.

I Was Elie Wiesel’s German Doctor

Common Sense with Bari Weiss • 973 implied HN points • 26 Jan 26
🎭️ Culture Memory
  1. Growing up in East Germany, visits to the nearby Sachsenhausen concentration camp left a lasting, shameful impression that was seldom talked about.
  2. Later life changes took a German-born doctor to America, where he became the physician for Holocaust survivor Elie Wiesel.
  3. Wiesel treated him not as a symbol of history or nationality but simply as a fellow human being, showing compassion that transcended past divisions.

How Holocaust Denial Became Mainstream

Common Sense with Bari Weiss • 862 implied HN points • 27 Jan 26
💾 History Memory
  1. As firsthand memory of the Holocaust fades, its meaning is increasingly contested and denial or distortion is spreading.
  2. The language used to fight racism and antisemitism has become formulaic and often empty, so it no longer effectively counters hatred and needs updating.
  3. The Holocaust underpins modern ideas like crimes against humanity and the postwar order, but those achievements are now threatened by historical distortion and revived antisemitic lies.

Moments Of Awakening

Astral Codex Ten • 17619 implied HN points • 23 May 25
📖 Philosophy Memory
  1. Many people remember their first conscious moments happening around ages 3 to 6, and some even recall the feeling of suddenly becoming aware of themselves. This suggests a shared experience of awakening to consciousness around this age.
  2. Some individuals claim to remember events from before they could normally form memories, like being in the womb or being born, but these memories are often questioned by scientists as being influenced by photos or stories heard later.
  3. There are thoughts that consciousness might develop in a sudden shift rather than gradually, similar to how people experience lucid dreams or moments of enlightenment, indicating that there could be a specific moment when awareness kicks in.

Ink in the Stomach

The Map is Mostly Water • 1353 implied HN points • 03 Jan 26
🎭️ Culture Memory
  1. When you study or work deeply on something it becomes a kind of sense—an "ink in the stomach" that builds intuition and changes how you see and respect the world.
  2. Chasing only novelty leads to shallow disappointment, but persistent attention and curiosity reveal endless layers of detail in people and places that repay long-term care.
  3. Collecting memories and practicing sustained attention—through photos, craft, or relationships—creates a reservoir of understanding and pleasure, and many things only make sense in hindsight.

Immutable Happiness

In Bed With Social • 217 implied HN points • 06 Oct 24
🎭️ Culture Memory
  1. Happiness can come from moments that focus on the present, creating peace without past or future worries. Simple, meaningful experiences make us feel whole.
  2. True luxury may lie in experiences that technology cannot capture, like personal interactions that create lasting memories. These moments feel more real and connected.
  3. There is a beauty in creating things that only exist in the moment and cannot be easily photographed or recorded, reminding us of the value of being truly present.

Meeting yourself again

Austin Kleon • 2118 implied HN points • 11 Jun 24
🎭️ Culture Memory
  1. Looking back at old memories can be joyful and inspire connection with others. Digging through old photos can bring back happy moments that you might have forgotten.
  2. Sometimes, what starts as a chore, like cleaning out photo storage, can turn into a fun trip down memory lane. You may find sentimental photos and reminders of good times.
  3. Revisiting past work or memories isn't just about nostalgia; it can spark new ideas for the future. Reflecting on what you've done can help guide where you want to go next.

Why Recurring Dream Themes?

Astral Codex Ten • 19409 implied HN points • 30 Jan 25
🎭️ Culture Memory
  1. Many people have recurring dreams about feeling unprepared, like forgetting homework or missing a flight. These dreams might reflect worries about not being ready for something important.
  2. Some experts believe these dreams could be linked to 'prospective memory,' which is how we remember future tasks and responsibilities. Our brains may remind us of these tasks in our dreams.
  3. Another idea is that recurring dreams may come from strange feelings we have while sleeping. These feelings can shape the stories we experience in our dreams.

five (surprising) ideas from cognitive and social neuroscience

Brain Pizza • 728 implied HN points • 03 Dec 25
🔬 Science Memory
  1. When your brain is 'idle' it isn't wasted time — this mode powers social thinking and mental time travel, helping you imagine others and different moments.
  2. Social pain and physical pain share brain systems, so being excluded or hurt socially can feel much like real bodily pain.
  3. Memories are often unstable and can change when recalled, which both explains memory quirks and opens promising avenues for treating memory disorders like Alzheimer's.

An emotion I can't name

Disaffected Newsletter • 1518 implied HN points • 20 Apr 24
🎭️ Culture Memory
  1. Sometimes we have feelings that are hard to describe. They can be a mix of sadness, protectiveness, and understanding for others who might not have much.
  2. Beauty can come from simple things in life. Special items, even if not expensive, can carry deep emotional meaning from loved ones.
  3. It's important to recognize and appreciate the struggles of others. Making fun of their situations can hurt, and we should approach their joys with kindness.

Solving The Problems of HBM-on-Logic

More Than Moore • 490 implied HN points • 17 Dec 25
🕹 Technology Memory
  1. Stacking HBM directly on top of accelerators creates a severe thermal bottleneck that pushes GPU temperatures far above safe operating limits.
  2. Solving it requires many coordinated changes — removing base dice, merging/thinning stacks, adding conductive shims, and aggressive backside or double-sided cooling — and the single most effective move is halving GPU clock speed, which lowers temperatures but cuts raw compute.
  3. Those fixes bring big cost, yield, and supply-chain challenges and may only give modest net gains, so 3D HBM-on-logic looks like a research roadmap rather than a near-term commercial product, with vendors likely pursuing improved 2.5D or remote high-bandwidth memory alternatives instead.

Ancient Wisdom: When Darkness Comes, Don’t Flinch

Common Sense with Bari Weiss • 2420 implied HN points • 20 Jul 25
🎭️ Culture Memory
  1. Facing tough times can be really hard, but it's important not to back down. Staying strong in the face of challenges helps us cope better.
  2. Family connections remain important even when circumstances change. Little moments with loved ones, like sharing stories or laughter, can bring comfort.
  3. Finding personal treasures or symbols can help us navigate difficult emotions. They can remind us of joyful memories and keep our spirits up during tough times.

Shin Guards

Public Universal Friend • 79 implied HN points • 02 Sep 24
🎭️ Culture Memory
  1. The story showcases how childhood games can sometimes lead to unexpected violence. The characters are just kids but their actions escalate quickly.
  2. The main character grapples with their identity and feelings of powerlessness, especially when witnessing a friend getting hurt. It highlights the struggle of fitting in while facing personal conflicts.
  3. Friendship dynamics play a major role in the scene, showing how peer pressure can influence actions and decisions, making it hard to stand up against the group.

Ceçi N’est Pas une Pipe

Seven Senses • 299 implied HN points • 13 Jul 24
🎭️ Culture Memory
  1. Memories are tied to objects, making them more valuable than money. A simple mug can hold the warmth of shared moments.
  2. Sentimental value can sometimes defy the idea of non-attachment. It's natural to hold on to things that remind us of loved ones.
  3. Each object can tell a story from our past, connecting us to our experiences and the people we cherish.

Things Worth Remembering: The Poem I Read to My Daughter

Common Sense with Bari Weiss • 1891 implied HN points • 15 Jun 25
📚 Literature Memory
  1. Reading poetry can create special memories between parents and children. It's a nice way to bond and share moments together.
  2. Shel Silverstein's poetry may seem old-fashioned, but it still resonates with kids today. It's timeless and enjoyable for new generations.
  3. Scent and sound can help us remember happy moments from our childhood. Little details like smells or music from home can bring back fond memories.

What aphantasia can teach us about episodic memory

The Memory Palace • 39 implied HN points • 03 Sep 24
🔬 Science Memory
  1. Aphantasia is a condition where people can't create mental images, making it hard for them to recall personal memories. They might not feel like they're reliving past events like others do.
  2. Research shows that people with aphantasia can still remember facts and details, but they use different strategies. They rely more on their understanding and experiences rather than visualizing things.
  3. Aphantasia challenges our notion of memory. It suggests that memory isn't just about visual details; it includes feelings and experiences too, which can be important for how we recall our past.

The Ambonese Woodlot Edition

Why is this interesting? • 1085 implied HN points • 15 Jul 25
💾 History Memory
  1. A plot of land in the Netherlands tells a deep history of World War II and colonialism. It has a hidden past with a house disguised as a normal home, which once stored munitions.
  2. The Ambonese refugees lived in a unique woodlot in the Netherlands, holding onto their dreams of independence. This place helped them preserve their culture and history for years.
  3. Our surroundings are filled with layers of history, often overlooked. Unlike places where change is constant, some areas remind us of past events and the stories tied to them.

When does a diary pay off?

Austin Kleon • 2797 implied HN points • 18 Jul 23
🎭️ Culture Memory
  1. Keeping a diary helps you pay attention to your life. It makes you notice what's happening and appreciate your everyday experiences.
  2. Writing in a diary allows you to track your personal patterns and understand yourself better over time.
  3. Having years of diary entries gives you a chance to look back and reflect on your growth and memories, making it easier to connect with your past.

I Know Where All The Chocolate In The House Is and You'd Think That Would Relax Me

The Chatner • 982 implied HN points • 09 Feb 24
🍲 Food & Drink Memory
  1. The author has a detailed memory of where all the food is in the house, especially chocolate.
  2. This habit seems to stem from a mix of concern for running out of things and a genuine interest in food and comfort.
  3. The habit of knowing where all the food is can be seen as thoughtful and caring, but it could also potentially be overwhelming for others.

Memories of Place

Street Smart Naturalist: Explorations of the Urban Kind • 539 implied HN points • 18 Apr 24
🏝 Travel Memory
  1. As we get older, we may find physical activities that used to be easy can feel more challenging. This change can be surprising and humbling.
  2. Our memories of places can fade over time, especially if we have done something repeatedly without truly engaging with it. Different kinds of experiences can create stronger memories.
  3. Our interest and pride in specific knowledge, like plant names, can help keep those memories fresh even when other things fade away.

Toy shop adultery (edited)

Eclecticism: Reflections on literature, writing and life • 6 implied HN points • 27 Feb 26
🎭️ Culture Memory
  1. Casual racist comments can appear in ordinary conversations and are particularly jarring because a person's skin colour has nothing to do with private relationships.
  2. Being young or taken aback makes it hard to challenge hurtful views in the moment, and that's an understandable barrier.
  3. Staying silent when you hear prejudice often causes lasting regret, and that regret highlights the value of trying to speak up or respond, even if imperfectly.

London under attack

Wrong Side of History • 978 implied HN points • 07 Jul 25
💾 History Memory
  1. The London bombings on July 7, 2005, had a tragic impact, claiming the lives of 52 innocent people and causing panic in the city.
  2. In moments of horror, many people showed great courage and compassion, helping those injured around them.
  3. The events highlighted the threat of terrorism in Europe, changing how people viewed safety and security in public places.

Dreaming of Memories

The Memory Palace • 39 implied HN points • 27 Aug 24
📖 Philosophy Memory
  1. Replay dreams can feel very real, making it seem like you're reliving a past event. They might happen after a traumatic experience, but they aren't always exact copies of what happened.
  2. Not all dreams that reference memories are considered replay dreams. Some, called quotidian dreams, use memories creatively rather than re-experiencing them exactly as they occurred.
  3. Researchers think dreams work differently than regular memory recall. While memory helps us access our past, replay dreams might serve a unique purpose, especially for those who have experienced trauma.

Three Things

Dinner: A Love Story • 1316 implied HN points • 01 Nov 23
🍲 Food & Drink Memory
  1. Make a Simple Tomato-Rice Soup for a Reset Meal
  2. Repurpose Leftover Halloween Candy into Baked Treats
  3. Consider Keeping a Folder of Things You Can't Throw Away for Future Reflection

These are the good ol’ days

Austin Kleon • 2158 implied HN points • 06 Jun 23
🎭️ Culture Memory
  1. Nostalgia can bring comfort and happiness, reminding us of good times from the past. But it can also distort how we see things now and make us forget about the present.
  2. While nostalgia can be a way to escape reality, a little bit of it can help us reconnect with ourselves and appreciate who we are now.
  3. We should cherish our current moments because they will turn into nostalgia one day. It's important to enjoy life and make memories while we still can.

sunday end of the year pool

bad cattitude • 78 implied HN points • 28 Dec 25
📖 Philosophy Memory
  1. Time flies, and the end of the year is a natural moment to pause and think about how time passes.
  2. The events and challenges of the year build up and take a real emotional and physical toll.
  3. The full essay is behind a paywall, so you need to be a paid subscriber or sign in to read the rest.

TGIF: Say It Ain’t Joe

Common Sense with Bari Weiss • 4150 implied HN points • 09 Feb 24
🇺🇸 U.S. Politics Memory
  1. Biden has been forgetting words and mixing up details, causing concerns about his mental state
  2. Biden is skipping the pre-Super Bowl interview to let Americans enjoy the game without politics
  3. A special counsel investigation chose not to prosecute Biden due to doubts about his mental ability to stand trial

A frenzy of forgetting

¡Do Not Panic! • 1061 implied HN points • 09 Aug 23
🌍 World Politics Memory
  1. Over 25 million people have died from COVID in the last 3.5 years
  2. There is a trend towards forgetting the impact of the pandemic amidst the massive death toll
  3. Cultural amnesia can allow societies to gloss over traumatic events, hindering true healing and understanding

Welcome to the Memory Palace!

The Memory Palace • 279 implied HN points • 16 Apr 24
📖 Philosophy Memory
  1. Memory palaces are a cool way to remember things by placing images in a familiar space. This method has been used for a long time in cultures that relied on oral storytelling.
  2. Having a strong memory was once a sign of a smart and educated person. Even today, memory competitions highlight how useful these techniques can be for everyone, not just the elite.
  3. Despite technology helping us remember more, memory is still important. Memory palaces encourage us to think about what information we value and want to keep in our minds.

Time travelling (with coffee and buns)

The Shift With Sam Baker • 599 implied HN points • 11 Jan 24
🎨 Art & Illustration Memory
  1. Time travel to a place where significant moments happened can evoke memories and the spirit of who we were then.
  2. Visiting familiar places can bring back not just memories, but also the essence of the person we were at that time.
  3. Exploring a familiar place after many years can reveal the changes while still preserving the essence of past memories.

Elio Forever

rachaelmeager • 297 implied HN points • 01 May 24
📚 Literature Memory
  1. The film 'Call Me By Your Name' can have different meanings for viewers depending on their own experiences and readiness to understand its themes.
  2. Elio, the main character, represents the complexities of love and loneliness, as he navigates desire and the struggles inherent in youth and academia.
  3. Memory plays a crucial role in the story, as Elio reflects on his past relationships and emotions, highlighting the difficulty of moving on from love.