Hey, it’s Matt Herzog

Simple idea: I share what I'm learning as I build.

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I'm documenting what I learn building projects involving math, machine learning, SaaS, and distribution—not as an expert, but as someone figuring it out in real-time.

This newsletter is part learning log, part experiment tracker, and part attempt to connect the dots.

Building an AI Fantasy Assistant: Reverse Engineering ESPN's API

Building an AI Fantasy Assistant: Reverse Engineering ESPN's API

A guide to get any data you want

Oct 14, 2025

Learning Log: When My AI Judge Couldn't Count to Two

Learning Log: When My AI Judge Couldn't Count to Two

Documenting what I'm learning building an email optimization system

Oct 5, 2025

Learning in Public: Building My First AI Coding Agent

Learning in Public: Building My First AI Coding Agent

What I learned building an AI coding agent

Sep 28, 2025

I Spent 52 Days on Math Academy—Here's What I Learned

I Spent 52 Days on Math Academy—Here's What I Learned

I wasn't bad at math after all

Aug 25, 2025