Mobile inventor warns against convergence.

"There's the Convergionists, who believe that all devices will end up converged into one. And the Separatistas, who believe that one device can't possibly do anything as well as a specialist one and that people will continue to prefer to own lots of devices to do different things... Martin Cooper, who invented the mobile phone back in 1973, has come out firmly as a Separatista purist this week at the Global Mobile Congress in China."