When I look at the time exposed picture, what jumps out at me, is how much waste this technology produces.

I would like to see a map showing how many times each square inch was vacuumed, as more than two times is a waste.

To me, a better cleaning model would be to start in the middle…. then go forward until an obstruction is hit… turn left or right… and follow alonge the obstruction (wall or chair or ? )… mapping out a parimeter until the first obstruction point is revisited.

Then the robot should adjust by 9/10ths the width of the cleaning surface, towards the center of that perimeter, so as to have a 10% overlap, and then follow that original course, adjusting on each revolution until it has run out of uncovered area.

Further programming would be needed to have it recall any obstructions, and make an attempt from all sides to get at all areas within the perimeter.

In the end, the robot would have a map in it’s memory, as to the shape and size of the room, and what obstructions were encountered… and where. It could refer to this memory in future attempts, and recognise where it is, or obstruction it encountered before.