My disbelief of you is from my own experiences writing them, and talking to dozens of colleagues across different companies. Every single company has to heavil

My disbelief of you is from my own experiences writing them, and talking to dozens of colleagues across different companies. Every single company has to heavily parallelize their e2e tests, and pays a huge CI bill on top of effort maintaining an overly complex CI config. Even after this, every company has to have a retry mechanism for their e2e tests because at least one fails at least every test run. It’s also the first thing I ask on interviews. I have many dat points on this one, across many teams and companies. It’s an abomination. Maybe you’re not talking about interactive web applications. Or maybe you’re not talking about the scale where you have thousands of e2e tests written over multi-year projects. If you’re talking about a toy project, sure you might not run into nondeterminism. These problems present themselves in aggregate.