HMND 01’s four-layer brain starts at layer zero, just like European elevators. That’s oddly fitting, given that its maker, Humanoid AI, is based in a sleek tower high above downtown London. It’s not the sort of place you might expect to find the grease and gears and rigging of a contemporary robotics startup, but it’s here that Humanoid is quietly assembling one of Europe's most credible answers to the humanoid robot race.While American rivals like Apptronik, Figure and 1X plus a wave of high-volume Chinese manufacturers like Agibot, Unitree and UBtech dominate the headlines, Europe has been building its own…