The problem is that any delimiter that has no chance of appearing in actual text will be hard to discover, and cannot appear on a standard keyboard (so it is not easily human-writable). So we are kind of stuck with the comma for human readable formats.
The problem is that any delimiter that has no chance of appearing in actual text will be hard to discover, and cannot appear on a standard keyboard (so it is not easily human-writable). So we are kind of stuck with the comma for human readable formats.