SATURDAY, OCTOBER 17, 2026Powered by Yokush

Kimbho Thoughts

Essays · Analysis · Field notes from the community
Yokush’s Choice
Latest
How AI works

The Zipper, the Mask, and the Lost Write: How AI Picks the Right Numbers

PyTorch indexing follows three consistent rules—indexes become coordinates that broadcast together, masks become flattened lists of True positions, an…
Siddharth33 min
Explainer

One Score Is All You Get: GRPO From Scratch, With a Lava-Hopping Robot

GRPO replaces PPO's learned value critic with a group-relative baseline—sampling G runs per prompt and normalizing rewards by the group's mean and sta…
Siddharth33 min
Explainer

How a Single Click Trains a Chatbot: RLHF From First Principles

RLHF turns cheap pairwise human preferences into a trained reward model via Bradley–Terry, then uses policy gradients with a KL leash to push the chat…
Siddharth10 min
AI

Everything Is Commodity

The core thesis is that commoditization is sweeping through all three layers of the AI stack at once—software, models, and silicon—with each layer's c…
Siddharth20 min
AI Agents

The Loop Is the Breakthrough: Why GPT-6 Astra Feels Different

GPT-6 Astra's breakthrough is not raw intelligence but the quality of the execution loop wrapped around the model—combining runtime tools, environment…
Siddharth14 min
AI

The Collapse of the Core: When Intelligence Becomes the Integration Layer

Core banking and ERP systems' thirty-year moat was never the software itself but the prohibitive cost of understanding it—a cost now collapsing tenfol…
Siddharth20 min1
AI Slop

The Filter Is the Collapse: How AI Slop Compounds, and What It's Quietly Doing to Us

AI slop doesn't degrade by blurring output but by a plausibility filter that systematically deletes rare, novel, and dissenting content—the tails wher…
Siddharth14 min
WealthTech

Bloom or Doom: The $124 Trillion Repricing of Trusted Advice

A 10,000-path simulation of a typical $500M RIA through 2032 reveals a 12.5× enterprise-value gap between AI strategies—$37M for an augmented-fiduciar…
Siddharth21 min
Banking Infrastructure

The $100 Million Problem solvable by AI: Semantic Virtualization of Legacy Core Banking

Legacy core banking systems cost over $100 million to replace, but a new six-layer architecture using meta-orchestrated AI agent layers can deliver th…
Siddharth31 min
AI
AI Agents
AI Strategy