Elias Mensah

Principal Data Scientist · Duolingo

Elias works on experimentation at a product with a daily habit loop, where almost everything looks significant if you squint at it long enough.

He teaches teams to read variance first and the headline second, and runs the hands-on workshop that has become the most oversubscribed session at every conference he speaks at.

He also writes about the ethics of optimising for engagement when engagement is the point of the product.