My own code was quite clean in the 1980s, when the limitations on the machines themselves tended to keep things fairly compact with minimal dependencies. And I learned a decent "structured programming" discipline.

As I moved into more modern languages, my code kind of degenerated into a giant hairball of dependencies and abstractions. "Just because you can do that, doesn't mean you should." I've kind of learned that the commercial programmers limit themselves to a few familiar patterns, and if you try to create a new pattern for every problem, your code will be hard to hand off.

Scientists would benefit from receiving some training in good programming hygiene.