[housemusicfan]

AirPrint isn't magic. It's just PostScript with DNS-SD bolted on top.

[epcoa]

It’s not Postscript. AirPrint supports a few different formats/PDLs including its own raster format and Postscript is notably not an option.

[LeoPanthera]

I don't care how it works, I only care that it does work.

[housemusicfan]

Except when it doesn't. I've had versions of Mac OS fail with AirPrint printers (spits out pages of garbage) that required manual tweaking and setup.

The bug was in Mac OS not the printer.

[turtlebits]

If you've ever had to install printer drivers and fight their bundled software/adware/spyware that comes along, *and* the huge headache of getting networked printing set up (looking at you Windows), AirPrint is magic. Especially being able to print from your phone.