My friend's new assistant
One of my friends cleans VIP houses and apartments. Since these objects have a large area, he found a great solution for vacuuming.
He bought an iRobot Roomba vacuum cleaner.
I stopped by a house he was cleaning to deliver him some chemicals. While my friend was working upstairs, I was downstairs watching his new assistant vacuuming.
When my friend went downstairs, he asked me: "Why did you let him go out on the terrace?". Well, my friend, I'm not the AI, he is, I guess he knows what and where to do.
In any case, iRobot has shown that there are no obstacles for it. He managed to get over the window sliders without any problem.