It’s encouraging to see Lego use technology to innovate on its standard bricks, but it should also make use of the opportunity to teach children robotics, says Parmy Olson for Bloomberg Opinion. LONDON: Play experts were dismayed this week when Lego launched Smart Bricks - blocks that play sound, light up and react to movement - at the Consumer Electronics Show (CES). Their worry: Kids won’t use their imaginations. But the real risk is that Lego misses an opportunity to teach children robotics.