Most people who interact with computer technology are forced to slog through complicated instruction sets – in the form of line commands, menus or even, in the case of many new Web sites geared for the cell phone market, verbal instructions. In each case, you have to be very specific in indicating what it is you want the computer to do – or risk getting the equivalent of a “dumb stare,” the type kids are famous for when they don’t feel like doing their chores. It’s like you can hear the computer saying “Huh?” Unless you have a natural talent [...]