It was less than a century ago that people marveled at the idea of robotic servants that would take over the everyday household tasks we would rather not have to deal with. Now we can watch these marvels in action – captured here via time lapse photography.

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What is perhaps most interesting is the similarities these paths have to other natural phenomena, such as the collision of tiny particles.
Some people have also reprogrammed the Roomba and iRobot devices to selectively clean (or dirty) surfaces to create patterns, forcing their siblings to clean up after them.