Most developers, if not pretty much everybody, will struggle to keep anything over 100k lines (my made up arbitrary number) of code in their head.

Older post, but Uncle Bob seems unhinged.

It’s a religion you know.

Even AI can’t stop the believers - you must write a test for every line of code before you write the code.

It may sound ridiculous crazy stupid and bananas to some but that the way TDD works.