Today I Learned

Short notes on things I've discovered — 12 TILs so far

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Recent TILs

python

Understanding NumPy axes as bracket nesting depth

Think of **axes as nesting depth** in a sequence of brackets.

numpypythonaxes

tools

Auditing AI-generated code with Open Code Review

For a while I have been thinking about the future of software, and it all started like this. Couple of weeks ago, for a reason I still don't know exactly (apart from using DeepSeek in Chat mode), I us…

code-reviewaiopen-code-review

The only AI benchmark that matches my experience

[Artificial Analysis](https://artificialanalysis.ai/) is so far the only benchmark that

aillmbenchmarks

web

Playwright MCP makes web scraping fun again

Since I first used [Playwright MCP](https://playwright.dev/) with Claude more than a

playwrightbrowser-automationmcp

wellness

A vibe-coded breathwork timer does the job

This weekend I forgot my Garmin smartwatch in the car and, with the heatwave, was too

breathingwellnessweb-tool

design

Sanzo Wada's color dictionary, online and LLM-friendly

While [rebuilding my personal website last week](https://www.rehatuncer.com/blog/2026/06/23/ai-powered-personal-website-rebuild),

designcolorcolor-theory

tools

noScribe — a privacy-first, local alternative to Google transcription

I've built the habit of recording important meetings for future reference. My current

transcriptionaiopen-source

python

Python can do causal inference too — introducing DoWhy

During my PhD, I believed advanced statistics belonged to specialized languages like R

pythoncausal-inferencedata-science

python

How to version Python packages with uv

`uv` makes Python package management incredibly fast. Here's a quick pattern for

pythonuvpackaging

web

Xikipedia — replacing doomscrolling with Wikipedia articles

One way to "cure" doomscrolling meaningless content could be replacing it with

algorithmprivacywikipedia

programming

Debug recursion without asking a statistical parrot

[Recursion Visualizer](https://www.recursionvisualizer.com/) is a mildly interesting

recursionvisualizationprogramming

science

The physics of tennis strings going dead

I've never cared much about the intricacies of my tennis setup, and I doubt — or hope —

tennisphysicsmaterials-science