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), mind (the science of awareness and willingness), and golf (the evidence and instruments of learning a sport). Each piece tries to lay the method, the disagreements, and the uncertainty out in the open.

23 articles Technology 14 Business 4 Mind 2 Golf 3
01
TECH · SYSTEMS & METHODS

Technology

14 articles
01 Technology

Re-encode It and the System Finds It. Regenerate It and the System Goes Blind

The Shazam paper wrote its own limitation in 2003: not expected to generalize to live recordings. Twenty-three years on that sentence is still the foundation of copy detection, and its largest gap — every fingerprint identifies one rendition, not the content.

2026-08-20 · 11 min read Read
02 Technology

Platforms Do Catch Reuploads. Nine Times in Ten They Take the Money Instead

In 2025 YouTube's copyright system identified 2.5 billion pieces of content; on more than nine claims out of ten the rightsholder took the ad revenue and left the video up. Then one rule change in July 2025 removed the original creator from the process.

2026-08-19 · 12 min read Read
03 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
04 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
05 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
06 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
07 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
08 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
09 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
10 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
11 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
12 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
13 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
14 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
03
MIND · AWARENESS & COGNITION

Mind & Cognition

2 articles
04
GOLF · LEARNING A SPORT

Golf

3 articles