- I Graded Every Lidl in Germany. Here's What Equal Allocation Costs You.
June 1, 2026
3,199 real Lidl stores, graded by catchment quality. 32% are D-grade. Under equal budget allocation, D-grade stores cost 20x more per modeled impression than A-grade stores. Catchment-informed allocation cuts that to 2.4x.
- Permission Slip
May 1, 2026
I decompiled 46 parenting apps from Google Play. Pregnancy trackers, feeding logs, white noise, baby monitors. Here's what they do before you tap 'I agree.'
- GPS Dies at the Supermarket Door
April 29, 2026
A stroller route gets you to the supermarket. Then GPS fades, and a phone in your pocket finds 417 Bluetooth devices, ultrasonic beacons, the fridge section by magnetometer, and enough retail infrastructure to accidentally build an ad-tech audit.
- We Removed the Money From an Ad Network. It Collapsed to 200 Lines of JavaScript.
April 22, 2026
Cafes broadcast discounts over WebRTC. Parents collect them by walking. No servers. No money. The barista is our fraud detection.
- We Replaced Our Routing Engine With a Neural Network That Has Never Seen a Map
April 17, 2026
8M parameters. 100k training routes. Zero knowledge of roads. Runs in your browser.
- We Let an AI Argue With Itself About Pentagons for 12 Hours
April 9, 2026
56 experiments. 37% improvement. Then it discovered Goodhart's Law.
- How We Handled Our Exponential Growth by Moving the Problem to the User
April 6, 2026
237M buildings. 44 countries. Zero servers. We moved the entire routing pipeline into the user's browser.
