…for t-tests, at least — Pop quiz. Can you use a t-test to tell if these two distributions are drawn from populations with the same expected value? If you said “Absolutely not!”, I get you. These Orange and Blue distributions don’t look normal…

A simple shortcut to persist through context switches — You edit a function in VSCode and switch over to your Tmux terminal to launch a process. It’ll take five minutes. Before you can check results a red notification bubbles up in your dock.

CI/CD directly from your repo — Shipping code can be a nightmare. With every code push you need to build, test, and finally upload your artifacts somewhere they can be used. With the rise of Docker, we’ve had the luxury of papering over minor differences in build and deployment environments—but we still need to pull, build…

Macros for maintainable, testable data analytics — SQL is an analyst’s bread and butter. It’s powerful, expressive, and flexible — but the more power a language gives you, the more ways you have of shooting yourself in the foot. Better abstractions can help us with this. If we can abstract away bits of code that we use…

Welcome to the birth of a new digital marketplace — Wind the clock back three decades. Pick a random kid off the street and ask them what they want to be when they grow up. I’d bet a hundred dollars on them saying “Astronaut”. It would just make sense. The shuttle missions were still in full swing and Tom Hanks…

The struggles of science at a fast-moving startup — Even hired its data team a few months after launch. Our mandate was simple: figure out if we were doing the right thing. Everyone at the company wanted to know if the product was optimizing for impact, and to optimize we needed numbers: risks to minimize and objectives to maximize. …