Exploring the echoes reverberating through time left by the technology of yesterday as we embrace the technology of tomorrow.

A close-up of an open leather-bound personal journal on a dark wooden desk with handwritten cursive ink visible across the pages
AI

Encoding a person: what training data should really be

Three years past the original encoding-a-person framing, the question of what data actually encodes a person has gotten clearer. The answer is less about volume and more about the specific kinds of context that compound over time.

Sid Smith Sid Smith 5 min read
Article 2: PR-only
Engineering

Article 2: PR-only

Direct commits to main are forbidden. Every change goes through a pull request, even when you're the only reviewer, even when you're the only person on the project. The discipline of writing the change down twice is what makes the work reviewable later, including by your future self.

Sid Smith Sid Smith 6 min read
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AI

Cheapest way to train an LLM in 2026 (it's not what you think)

The cheapest way to train an LLM in 2026 isn't to spin up a giant cluster or to negotiate with a hyperscaler. It's to start from a pretrained base, optimize the data, and use the cheap-tier infrastructure that's matured around small-scale fine-tuning.

Sid Smith Sid Smith 5 min read
AI in the news: week of January 11, 2026
AI in the News

AI in the news: week of January 11, 2026

CES 2026 week. NVIDIA unveils Rubin and the DGX Spark/Station desktop AI line, AMD ships Ryzen AI 400 with a 60-TOPS NPU, Qualcomm pushes Snapdragon X2 to 80 TOPS, Samsung wires Bixby and Alexa+ into every appliance, and Mercedes ships Nvidia-powered L2 in the CLA. My take.

Sid Smith Sid Smith 5 min read
The enterprise AI stack: substrate, platform, applications
AI

The enterprise AI stack: substrate, platform, applications

Three layers, top to bottom: applications (the AI features users see), platform (model registry, serving, observability, governance), substrate (K8s, GPUs, storage). Decisions as Code runs through every layer. Centralize the decisions. Project them everywhere.

Sid Smith Sid Smith 7 min read
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Personal AI

Notes from a home AI training pipeline

What it actually looks like to run a serious training pipeline at home in early 2026, the data prep, the orchestration, the evaluation, the operational discipline. Less hand-wavy than the typical write-up, more boring than the marketing pitch.

Sid Smith Sid Smith 5 min read
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AI

2026 predictions: where the puck is heading

Twelve specific predictions for 2026, calibrated against the patterns I missed in 2025. Less hand-wavy than the typical year-ahead piece. I'll grade them plainly at the next checkpoint.

Sid Smith Sid Smith 4 min read
AI in the news: week of January 4, 2026
AI in the News

AI in the news: week of January 4, 2026

The bridge week. SB 53 went live on January 1, the year-end retrospectives all said roughly the same thing about 2025, the 2026 prediction pieces from Sequoia and a16z dropped with surprisingly compatible takes, and CES 2026 is sitting on Tuesday's runway. What I make of the turn of the year.

Sid Smith Sid Smith 4 min read
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AI

2025 wrap-up: what actually changed in AI

End-of-year recap. Most of the year's narrative was hype layered over a smaller set of substantive shifts. Worth being explicit about what actually changed and what didn't, before the 2026-predictions piece tries to extrapolate from the noise.

Sid Smith Sid Smith 4 min read
Why multi-tenant is twice as expensive as you estimated
architecture

Why multi-tenant is twice as expensive as you estimated

Multi-tenant from day one is roughly 2x the cost of the single-tenant version. The hidden costs aren't in the code, they're in auth, audit, query routing, observability, support tiering, and billing. Often the cheaper move is to start single-tenant and earn your way in.

Sid Smith Sid Smith 7 min read
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AI

The MCP use cases worth tracking

MCP went from emerging standard to genuine substrate in 2025. The use cases that have actually shipped on it are more interesting than the broad-platform-narrative version. Worth being specific about which ones to track and why.

Sid Smith Sid Smith 5 min read