Building a wall by precisely stacking randomly shaped boulders could almost be the definition of hard work – both physically and mentally. It's the sort of thing we might want robots to do one day, so it should come as no surprise that one has in fact just done it.
Robotic excavator builds a giant stone wall with no human assistance::undefined
For those using reader mode, the caption under the image says:
The HEAP excavator at the construction site – an overlay on the boulders at left illustrates how each one was scanned prior to placement.
To be fair, you don’t see this caption if you have your client set to automatically use reader mode.
Gotcha, rescinding my snark.