[codemog]

Does taking this example and extending it to the limit answer your question? There is a reason we don’t have a single file called program with a million lines of code in it. Google studies on module size vs code defect rates for more empirical numbers.

[ben_w]

The limit you're replying to is files which are each tens of lines long. At that point, the cognitive overhead of switching documents is larger than the benefit of a compact object to reason about.

(Personally my threshold is around 2-5 thousand lines per file depending on what it is; but that's me working solo, obviously I'll follow whatever standards any team I'm in gives me).