Stephen Downes about the golden triangle of mobile, social and real-time. He is reformulating those three concepts in a clever way, which makes them larger yet more precise.

A platimum triangle, maybe: ambient, smart and personal. Tech that’s there when you need it (mobile is only one part of this); that connects with people but knows who, when and where (social is only part of this); and that responds to all your needs and interests (real-time is only part of this).