What can Lego control panels teach us about design? User interface designer George Cave documented on his blog how he bought 52 computer interfaces from Lego marketplace BrickLink to try and learn more about what makes a good panel design.
More recent examples show the danger of bad button layouts. Cave cited a CNN article about Ford recalling the Lincoln SUV. Drivers switching to Sport mode were inadvertently shutting off the engine instead.
The problem was the panel design. The Sport mode button, marked "S," was the same shape and design as the engine cut-off button directly below. Oops.