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4 YAML Files Instead of PySpark: How We Let Analysts Build Data Pipelines Without Engineers
Data EngineeringHow we replaced Python pipelines with dlt, dbt, and Trino — and cut delivery time…
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The best machine learning model is not one model
9 min read
Latest
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Caching, lazy-loading, routing, compaction, and more
26 min read -
System Design Series: Apache Flink from 10,000 Feet, and Building a Flink-powered Recommendation Engine
Data ScienceA deep dive into how Apache Flink works, why it exists, and learning it while…
17 min read -
Using autoresearch to optimise marketing campaigns under budget constraints
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What does correlation tells us?
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Blast-radius control tells you how much to break. Intent tells you what breaking it will…
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PyTorch NaNs Are Silent Killers — So I Built a 3ms Hook to Catch Them at the Exact Layer
Deep LearningNaNs don’t crash your training — they quietly destroy it. After losing hours to a…
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Sabrine Bendimerad on why flexibility is a crucial data science skill, the risks of outsourcing…
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A simulation of how a single forecast change moves through five planning teams, and why…
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With the advent of UDFs and their combination with calculation groups, I see a lot…
6 min read
Editor’s Picks
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Why learn 8 scripts when you can learn 256 bytes?
12 min read -
How does decision-gravity dictate this gap?
12 min read -
A local, zero-cost project that cleans, structures, and summarizes your reading automatically
13 min read -
Using Causal Inference to Estimate the Impact of Tube Strikes on Cycling Usage in London
Data ScienceTurning free-to-use data into a hypothesis-ready dataset
19 min read -
A short intro to scientific methodology to combat “prompt in, slop out”
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Why it tickles your brain to use an LLM, and what that means for the…
8 min read -
Git worktrees, parallel agentic coding sessions, and the setup tax you should be aware of
20 min read -
How I turned my eight-year weekly visualization habit into a reusable AI workflow
7 min read
The Variable Newsletter
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Authors can now benefit from updated earning tiers and a higher article cap
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Sorting through the good, bad, and ambiguous aspects of vibe coding
4 min read
Deep Dives
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We have the document clusters, and it’s time to unlock their true potential! Let’s explore…
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It’s simpler than you think.
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Learn how Propensity Score Matching uncovers true causality in observational data. By finding “statistical twins,”…
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How you can build your own Thompson Sampling Algorithm object in Python and apply it…
17 min read -
For any data scientist who works in a team, being able to undo Git actions…
24 min read -
The hidden cost of probabilistic outputs in systems that demand reliability
13 min read