Semi related: There's a cool rabbit hole you can dive into when it comes to coastline lengths of some countries. Specifically the UK.
Depending on who measured the coastline and with which method the results can be wildly different because there's always some form of simplification required. See this video for example: Link
Recently switched jobs from maintaining a 15 year old Windows Forms .NET Framework legacy codebase.
At the new job we stick to Clean Architecture, use unit and integration tests, have a code generation tool, actually make nice use of generics and use dependency injection. Also agile processes, automatic build tools, whatever. The difference is night and day and I'm so glad my ex boss fired me because I told him he's an asshole and his codebase is shit.
