Something that is not on any map🫣 Maps know the roads. They don't know the steps. How many steps to the door, whether there is an elevator, where the intercom is - for a person it's a trifle, the eyes will figure it out themselves. For the robot, this is a wall, because this information is simply not in the data. If you are waiting for a courier or guests, just say: "second door, seven steps, intercom on the left". Three seconds, and wandering in the yard saves a person. @vangrid_io just teaches cars such trifles - not through a satellite, but through shooting people who are really standing at this door.