Defining Hypotheses

Startup founders must engage in a lot of experimental learning to find and confirm their markets. The vision matters, of course, but it also …

MVPs Reveal Preference

Paul Samuelson introduced the concept of “revealed preference” in a 1938 article entitled A Note on the Pure Theory of …

Cheap and Cheerful

If you shop at Costco you are likely aware that they give away boxes of many shapes and sizes. Many of these are reinforced to protect …

Letters in LaTeX

Once upon a time I did a great deal of work with $\TeX{}$ and $\LaTeX{}$. I implemented many elements that were not broadly supported at …

Google Sheet Sort

Today I learned about the sort function in Google Sheets. This came in handy to show different sorted views of one sheet on another. …

Hot-Potato Package Delivery

I ordered something from Walmart. They shipped it to me. Their delivery tracking said that USPS handled the final delivery. And USPS says …

Idempotent Home Directory Setup

When I set up a new FreeBSD jail, I pull my home directory configuration from a GitHub repo. When I initially put this together I …

The Dismal Science

Today I learned that the “Dismal Science” description of economics comes from a Thomas Carlyle essay. He argues there against …

A Two Card Strategy

Today I discovered that I was the victim of an instance of credit-card fraud. I disputed the charge. The purchase was labeled as “card …

Interviewing With AI

The vibe-coding trend is alarming to anyone who values correctness in code. Putting AI generated code into production without full scrutiny …