pinyu.ai

Writing is how I stop being shaped unconsciously by symbols and begin reshaping them deliberately.

  1. Agent Harness Engineering: The Missing Half of AI Agents Tech

    Why better agents come from better systems around models, not just better models

  2. Your Diffusion Model Has Never Seen a Pixel Tech

    What VAEs are really for, and why modern image and video generators still depend on them.

  3. FlashAttention, Intuitively Tech

    Exact Attention Without the Giant Matrix

  4. How LLMs Actually Work: The Hidden State Is the Story Tech

    A visual mental model of Transformers

  5. Backpropagation as Sensitivity Accounting Tech

    The Programmer’s Intuition

  6. The Phantom Tensor: An Intuitive Guide to Tensor Parallelism in LLMs Tech

    Why the massive intermediate tensor in a Transformer MLP never actually exists in your GPU memory.

  7. LLMs Are Closer to World Models Than Multimodal Models

    Perception gives models more world. Language gives them a place to think.

  8. Why Transformer Blocks Are Built as Residual Updates Tech

    A standard Transformer block often looks like this:

  9. Loss is the price of misplaced belief Tech

    A cleaner intuition for cross-entropy in language models

  10. Power is Rented

    Real influence lives in other people's expectations of your future.

  11. What Normalization Really Removes Tech

    Shift, scale, and the unstable coordinate systems inside neural networks

  12. Ideas Need a Body

    Why real understanding is not information transfer, but a temporary change in the person receiving it

  13. Personality is an attention system

    Why MBTI feels compelling, why it is not enough, and what personality is actually doing before you even start thinking

  14. Success Is a Permission System

    Why effort and talent still have to pass through status, signals, and self-protection before they become results

  15. Good Writing Saves the Reader’s Brain

    The deeper lesson behind short sentences, active verbs, and ruthless editing is cognitive design: make the reader spend less energy reconstructing your idea.

  16. Writing Rewrites Reality

    How writing helps us stop being unconsciously shaped by symbols

  17. Why Organizations Get Stupid

    Smart people can see the problem. The organization may still refuse to let it become one.

  18. Why we need to make things happen ourselves

    Meaning begins when time becomes consequence

  19. People Subscribe to a Promise

    Audience growth is expectation training: the repeated confirmation of a clear promise.

  20. The theory of constraints

    most improvement work is pointed at the wrong place

  21. The Real Meaning of Moving Fast

    Speed is not hustle. It is the density of contact with reality.

  22. AI Makes Expression Cheap. Proof Becomes the Moat.

    How AI shifts persuasion from polished expression to verifiable trust

  23. The Voice in Your Head Is Not the Problem

    How Psychological Distance Turns Inner Chatter into Self-Coaching

  24. The Most Dangerous Place to Start a Business Is the Middle

    How premium offers help early businesses survive, learn faster, and scale from strength