[partition]

They claim that avoiding vacuuming the same area twice saves power, but is that true in every situation? Math-wise, it seems possible for a self-avoiding path (with thickness) to be _longer_ than a similar path (with thickness) that does self-intersect, so the vacuum is on longer, so it actually consumes more power.

Edit: And if you do go over the same spot twice, you should be able to detect that with your navigation system so that you can turn the brushes and suction off or something.