Brother First Research

Amos · Technology · Business · research.xishe.ai

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A continuously updated index of public research: technology (quant trading, app releases, AI infrastructure) and business (supply chains, distribution & demand, the AI API resale economy). Each piece tries to lay the method, the disagreements, and the uncertainty out in the open.

16 articles Technology 12 Business 4
01
TECH · SYSTEMS & METHODS

Technology

12 articles
01 Technology

What Kills Open-Source and Nonprofit Projects: The Name, the Domain, Publish Rights, Ownership

Anyone can take the code; these four exist only once. Bus factor is uncorrelated with stars, the xz time gate admitted the attacker on schedule, and curl’s flood grew after the bounty died — the structural half.

2026-07-27 · 10 min read Read
02 Technology

Can Fine Cutting Be Handed to AI? The Boundary Isn't Model Precision — It's What Defines the Cut

The parts already automated get their frame accuracy from signal processing, not AI; what actually blocks the rest is that nobody can score whether a cut is good

2026-07-24 · 21 min read Read
03 Technology

Building a High-Quality Agent Skill From Scratch, and Running It as an Open-Source Project

The field that decides everything is the description line, yet its failure mode is being dropped wholesale; and once open-sourced, zero adoption is the default and code quality barely decides it

2026-07-24 · 21 min read Read
04 Technology

User Personas and Modeling: What Actually Predicts Behavior, and What's Just Ritual

Most persona dogma is unvalidated; what predicts behavior is revealed preference, not an imagined user

2026-07-16 · 10 min read Read
05 Technology

Giving an LLM a Persona: An Evidence Review of Product Requirements Judgment and Routing

Removing role prompts hurts most in ablations — yet independent tests catch the PM agent rewriting your requirements

2026-07-15 · 8 min read Read
06 Technology

Speech Without Text: Executing Tasks Directly from Audio Vectors

So-called end-to-end speech models are still quietly transcribing under the hood

2026-07-14 · 8 min read Read
07 Technology

CI/CD and E2E in the AI Era: From Software Products to AI-Enabled Hardware

Probabilistic evals, multi-artifact delivery, and testing hardware you can't roll back

2026-07-10 · 13 min read Read
08 Technology

Automated Trading on Prediction Markets: Mechanics, Market Making, Arbitrage, and Execution

From market-making to arbitrage: a complete map of prediction-market quant

2026-07-08 · 21 min read Read
09 Technology

The Complete App Beta-Testing Workflow: iOS, Overseas Android, and Domestic Channels

Why must a brand-new Google Play account wait out a full 14 days?

2026-07-08 · 11 min read Read
10 Technology

The Hidden Piece of True Solar Time: The Equation of Time and the BaZi Hour Pillar

True solar time with only longitude correction can throw the hour pillar off by one

2026-07-08 · 8 min read Read
11 Technology

Automatically Judging Day-Master Strength in BaZi: Using Blind Human Review to Surface Two Kinds of Systematic Error

Where does an algorithm judging day-master strength most often go wrong?

2026-07-08 · 10 min read Read
12 Technology

How to Make Sure an LLM Returns JSON That Strictly Matches the Expected Format

json_object is not a schema guarantee — a layered defense architecture

2026-07-08 · 20 min read Read
02
BIZ · INDUSTRY & STRATEGY

Business

4 articles