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@@ -12,4 +12,19 @@ Mac OS build is from now on considered "unsupported". I will strive to keep it f
 but I won't work on Mac specific features or integrations.
 Note that this is more of an acknowledgment of an existing state rather than sudden change of direction.
 
-Of course, PRs are welcome.
\ No newline at end of file
+Of course, PRs are welcome.
+
+# Why database instead of flat files?
+
+Trilium stores notes in a [[document]] which is an SQLite database. People often ask why doesn't Trilium rather use flat files
+for note storage - it's fair question since flat files are easily interoperable, work with SCM/git etc.
+
+Short answer is that file systems are simply not powerful enough for what we want to achieve with Trilium. Using filesystem would mean less features with probably more problems.
+
+More detailed answer:
+
+* [[clones|cloning notes]] are what you might call "hard directory link" in filesystem lingo, but this concept is not implemented in any filesystem
+* filesystems make a distinction between directory and file while there's intentionally no such difference in Trilium
+* Trilium allows storing note [[attributes]] which could be represented in extended user attributes but their support differs greatly among different filesystems / operating systems
+* Trilium makes links / relations between different notes which can be quickly retrieved / navigated (e.g. for [[link map]]). There's no such support in file systems which means these would have to be stored in some kind of side car files (mini-databases).
+* Filesystems are generally not transactional. While this is not completely required for a note taking application, having transactions make it way easier to keep notes and their metadata in predictable and consistent state.