A grain of truth

摘要

Regular online readers may have been tickled by The Engineer's April Fool's offering earlier this year: the 'fake' news that the US president has enlisted an army of 3D-printing robots to build his controversial border wall.The scenario we presented, complete with autonomous drones designed to replenish the robots' powdered-gold feedstock, was obviously ridiculous -although we did receive a message from someone called 'Donald' congratulating us on our idea. But as with all half-decent spoof stories there was the tiniest grain of truth to our flight of fancy.