Evgeny Ivanov

In one of my previous posts, I discussed congestion in the job market caused by the surge of AI tools that scrape job descriptions and auto-apply to jobs.

Disclosure: I am also the author of tea-tasting.

Market prices are similar to model weights in the sense that they are "fit" through price discovery mechanisms to optimize for equilibrium.

A ladder of questions in analysis: Which question should we ask to address a decision or a problem?

Fisher and smoking # Ronald Fisher, the father of modern statistics and experimental design, refused to believe that smoking tobacco caused lung cancer.

Note: the post has been updated on March 7, 2026.

an email a Slack message a PRD a one-pager nothing

tea-tasting: statistical analysis of A/B tests # tea-tasting is a Python package for statistical analysis of A/B tests that features: Student's t-test, Z-test, and Bootstrap out of the box.

Intro # Many people associate the Dunning–Kruger effect with the following image: Misinterpretation of the Dunning–Kruger effect Actually, this image is a misinterpretation of the conclusions drawn by Dunning and Kruger from their experiments.

Recap # This is the second post about the ranking problem in Profi, a services marketplace where customers can find tutors, beauty masters, plumbers, and other professionals, and professionals can find customers.

Overview # Profi is a two-sided matching platform where customers can find tutors, beauty masters, plumbers, and other professionals, and professionals can find customers.

What is rico?