Yet another article about how Sooner or Later, All Electronic Gadgets Will Converge Into a Single Gadget, a premise I strongly disagree with. Someone writes one of these every few years and every time a new "Converged" gadget comes out it does some things better than the last disastrous attempt but always fails miserably compared to single-function devices. I think it is going to be a long, long time until these fantastical perfectly converged devices exist. If ever. This is becuase of the interface -- by far the largest problem. Think about how much harder mobile phones have gotten to use as they add more functions. While software and digital bits are malleable and flexible, the physical form factor and physical buttons are not. This is the classic Video Player vs Phone vs Email devices issue: Do you want a big screen that fills the while device? Do you want the device to fit on your pocket? Do you want a full keyboard? All of those are phyiscally incompatible.