In the dark recesses of the Earth, there’s a laser eye that sees all. It’s the perfect guide for the big excavators, showing them down to the last centimeter where to tunnel. by Ángel Luis Sucasas / JP Zurdo HOW IT WORKS n emerald beam shines on the rock wall. The tunnel advances toward precision. It’s a metaphor for the way that technology takes the shortest path —that’s what a tunnel is, after all— to its destination: more efficient, faster, cheaper, cleaner pro-cesses for building infrastructure. Or how a compact, portable projector measuring just 100 x 45 x 55 centime-ters and weighing 75 kilos, equipped with powerful laser optics, helps drill through rock with surgical precision. Surgery is also a fitting metaphor. If a surgeon applauds a technological tool that enables intervention in the most efficient, least invasive way possible, so too