Apple recently announced a new file system for Apple products, Apple File System (APFS). Amongst the characteristics, is Nanosecond Timestamp Granularity. Sure, this sounds impressive, and is a great improvement compared to one-second granularity of HFS+.
Lee Hutchinson writes that:
Nanosecond timestamps are important in a modern file system because they help with atomicity—in a file system that keeps a record of writes, having nanosecond-level granularity is important in tracking the order of operations.
How does nanosecond granularity improve my experience as a user of Apple products? Or is something I'm not likely to notice?