but the important thing is for a construction manager to be able to walk the site and spot those deviations and decide whether they or the plans need fixing. hang on, we've got another pipe problem. look. right, there's another pipe that's supposed to be going that way, and they made it go that way. there is a pipe that's supposed to be going there, and it's not. it's not here at all. exactly. well, they forgot to put in a pipe. or there was a change made on site where they decided to go outside. once this is handed off to the next trade or the next set of work starts, deviating has a knock—on impact on the rest of the building process. and that wouldn't be spotted until when? until it's too late, if i'm being serious about it. unlike other augmented reality headsets, the xyz system uses these lasers to sweep across the site and precisely locate all of the helmets. this then taps into the site