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If one Zac is good, 2x is better
Jacob

Anatomy of a founder’s trip

My pro tip for drumming up good vibes while on the West Coast? Start early, stay flexible, and get yourself a twin.

October 11th, 2026

Zac

Private by default, public by choice

A private-by-default approach gives builders agency over agents and data, but trust is still built in public.

October 6th, 2026

Jacob

The AI conversation in my small town

Want to talk about datacenters? As a founder living in rural Vermont, I have the chance to initiate conversations on a topic that is on everyone's mind.

October 5th, 2026

Works in Progress magazine, issue 25
Jacob

The worst kind of ear worm

As a former professional musician, I have a lot of experience with ear worms, but the AI variety is more pernicious: its flat, predictable rhythm creeps into my inner monologue!

September 28th, 2026

It’s my birthday, so why am I starting a blog?
Zac

It's my birthday, so why am I starting a blog?

I'm Zac Smith. This week I turned 47 so I'm starting a blog with my twin brother, Jacob. We'll aim for 47 posts this year, each less than 4,700 characters and written without AI.

September 28th, 2026

Twins in the Loop home

Twins in the Loop is the personal blog of Zac and Jacob Smith - identical twin brothers, recovering classical musicians, digital infrastructure veterans, and co-founders at Datum (a startup that provides connected infrastructure for AI companies). Learn more

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