> Also, filenames and directories tree act as metadata to help create a mental map of the application Correct. But this is an argument against splitting: once

> Also, filenames and directories tree act as metadata to help create a mental map of the application Correct. But this is an argument against splitting: once your folder structure reflects your mental model, you should no longer split, no matter how big individual files get. Splitting further will cause you to deviate from your mental model. Also, it seems like we're arguing against a strawman: saying "big files are okay" is not the same as "you should only have big files". When people mean is that having a big file does not provide enough justification to split it. But it is still a signal.