Sun's NeWS was a mistake, as are all toolkit-in-server windowing systems (2013)
To my eyes, NeWS does not look like a mistake. On the contrary, it looks beautifully engineered.<p>Among other advantages, I can imagine a world where PostScript would be used for building user interfaces: a document in screen and print would look the same, without need for writing conversions like, e.g. HTML+SVG -&gt; PDF when someone needs to somehow print a web form quickly. And perhaps the old principles of typography and the experience in typesetting beautiful books with PostScript could be more easily applied to UI design.