Kinetix: An Agent Harness Inside a Clinical System
Biomechanics from Video08
81 posts · 11 years
Writing
I write to understand things, not to look clever. Everything here explains a hard idea the way I wish someone had explained it to me, with analogies, runnable code, and honest numbers.
2026
An Agent Is Data, Not Code
Agent Harness04
What the System Refuses to Measure
Biomechanics from Video07
Finding Sick Plants From the Sky: DINOv2, a Linear Probe, and a Farmer With a Drone
Vision in the Real World03
Triangulation, and How Many Cameras You Actually Need
Biomechanics from Video06
From 26 Keypoints to Clinical Metrics
Vision in the Real World02
Teaching a Camera to Grade Its Own Footage
Biomechanics from Video05
Angles Don't Lie: Measuring a Cricket Bowler's Action With a Webcam
Vision in the Real World01
Facing, Sign, and the Error That Mirrors Everything
Biomechanics from Video04
Molecular Docking Without the Jargon: A Key, a Lock, and Both of Them Wobble
Machine Learning for Biology06
Why 2D Beat 3D on the Angles That Matter
Biomechanics from Video03
From 400,000 Natural Products to 20 Candidates
Machine Learning for Biology05
From Pixels to a Knee Angle
Biomechanics from Video02
Your Negatives Decide Your Accuracy: 92% That Means Nothing
Machine Learning for Biology04
What "Accurate" Means For a Joint Angle
Biomechanics from Video01
What ESM-2 Learned That Letter-Counting Couldn't
Machine Learning for Biology03
2025
Safe by Default: Building Agents That Can't Wreck Your Data
Agent Harness03
LLM Security in Practice: A Checklist and the Mindset Behind It
LLM and Agent Security06
Turning a Peptide Into Numbers: A Tour of the Descriptor Zoo
Machine Learning for Biology02
Give the Model Your Verbs, Not Your Tables
Agent Harness02
Exfiltration Through the Model's Mouth: Output Is an Attack Surface
LLM and Agent Security05
Peptides 101: The Tiny Molecular Sentences Your Body Writes
Machine Learning for Biology01
Sensitive Data: Masking PII and Keeping Secrets Out of the Model
LLM and Agent Security04
What Is an Agent Harness? The Part Everyone Skips
Agent Harness01
The Agent's Blast Radius: Giving a Confused Deputy Hands
LLM and Agent Security03
The Slowest Kid Problem: How a Super Captain Solves MoE's Biggest Headache
Mixture of Experts02
Prompt Injection: Direct, Indirect, and Why Filtering Fails
LLM and Agent Security02
Why AI Security Is a New Problem: The Model Has No Data Channel
LLM and Agent Security01
Green Padlock, Zero Headache: Let’s Encrypt SSL for Self-Hosted Dify
A Field Guide & Benchmark for Similarity Search in RAG
Retrieval and RAG02
LexSubLM-Lite: Lightweight Lexical Substitution That Runs Anywhere
From One Brain to Many: Understanding Mixture of Experts (MoE) Like You're 12
Mixture of Experts01
2024
Network Security: Who Are You Actually Talking To?
Security From the Ground Up07
Binary Exploitation: When Data Overwrites Code's Own Bookkeeping
Security From the Ground Up06
Retrieval Metrics Demystified: From BM25 Baselines to EM@5 & Answer F1
Retrieval and RAG01
Broken Access Control: Logged In Is Not the Same as Allowed
Security From the Ground Up05
Cross-Site Request Forgery: Making the Victim's Browser Do It
Security From the Ground Up04
Cross-Site Scripting: Running Your Code in Someone Else's Browser
Security From the Ground Up03
SQL Injection: When Your Query Is Written by the Attacker
Security From the Ground Up02
What Security Actually Is: Trust Boundaries and the Two Master Bugs
Security From the Ground Up01
Brains Behind the Bots: Classical Planning from Ground Up
AI Foundations10
Classical Planning 101: From STRIPS Blocks to Graphplan Magic
AI Foundations09
2023
First-Order Logic Made Friendly: From ‘Socrates Is Mortal’ to Automatic Proofs
AI Foundations08
Logical Agents 101: Slaying the Wumpus with Pure Reason
AI Foundations07
Constraint Satisfaction 101: From Sudoku Logic to Map-Coloring Zen
AI Foundations06
Adversarial Search 101: From Minimax to AlphaZero, How AI Plans When an Opponent Fights Back
AI Foundations05
Beyond Classical Search: Hill-Climbers, Hidden Worlds & Agents That Learn on the Fly
AI Foundations04
Backend Best Practices: The Tricks That Keep a Service Boring
Building Backends08
Intelligent Agents & Search: A Baby-Steps Tour from ‘What is Rational?’ to ‘How do we find the goal?’
AI Foundations03
Machine Learning 101: PyTorch, TensorFlow & Decision Trees
AI Foundations02
Math for AI Made Simple: The Linear-Algebra Lego Set Behind Every Model
AI Foundations01
2022
2021
Memory: Why the Array Wins Even When the Step Count Says Otherwise
Problem Solving From Zero21
Machine Learning Algorithms by Hand
Problem Solving From Zero20
Designing a REST API That Ages Well
Building Backends05
Fenwick Trees and Segment Trees: When Updates and Queries Interleave
Problem Solving From Zero19
Homomorphic Encryption (HE) Explained: A Beginner’s Guide to Secure AI on Encrypted Data
2020
Strings: Hashing, KMP, and the Z-Function
Problem Solving From Zero18
SQL or NoSQL: Just Use Postgres, and the Cases Where You Should Not
Building Backends04
The Number Theory You Actually Need
Problem Solving From Zero17
Databases and ACID: What a Transaction Actually Promises
Building Backends03
Game Theory: Nim, Losing Positions, and the Grundy Number
Problem Solving From Zero16
2019
Disjoint Sets, and the Cheapest Way to Connect Everything
Problem Solving From Zero15
Django or FastAPI: How the Framework Shapes the Code You Write
Building Backends02
Shortest Paths: Dijkstra, Bellman-Ford, Floyd-Warshall
Problem Solving From Zero14
Design Patterns You Actually Use, and the Ones You Should Not Reach For
Building Backends01
Depth-First Search: Cycles, Components, and Topological Order
Problem Solving From Zero13
2018
2017
Memoisation: Paying Once for an Answer
Problem Solving From Zero09
Recursion and Backtracking: Trusting a Function You Have Not Finished Writing
Problem Solving From Zero08
Greedy: When Taking the Best Now Is Provably Right
Problem Solving From Zero07
Binary Search, and Binary Search on the Answer
Problem Solving From Zero06
2016
Pointers and Linked Lists: Addresses, and the Data Structure Made of Them
Problem Solving From Zero05
Sorting: What to Know, What to Call, and What to Sort By
Problem Solving From Zero04
Prefix Sums and Two Pointers: The Array Tricks You Will Use Forever
Problem Solving From Zero03
Big-O Without the Maths: Naming the Shape of a Curve
Problem Solving From Zero02
Counting the Steps: What Your Loop Actually Costs
Problem Solving From Zero01