[lenkite]

Well-written XML that was designed for humans instead of machines is much, much more easier to read than JSON. The primary reason is that unlike s-expressions or xml, there is no block-name. In JSON you loose valuable time figuring out the block context in a hierarchy since this isn't labelled.

The only kind of JSON that is readable is flat JSON that is nested to a maximum of 1 level.

[digisign]

Either format can be pretty printed. If you need signposts to figure out where you are, it is a simple manner to add dictionary key names to things.