This is a very different problem than actual efficiency when mowing a lawn or vacuuming a rub. Turning takes more work and time, and you miss a part of the 'square' when you are turning (the arc of the curve is not a straight line). In addition, vacuums especially have an area at the edge of the machine that is not cleaned as well, which is why you want a bit of overlap in your lines. Plus, when mowing a lawn, you of…
Plus mowing a lawn is meditative Copying another comment I made earlier When I was laid off a couple months ago, the first thing I did was go out and mow my lawn. One hour of simple, clean labor, with clear progress, goals, and solitude. It helped me stay out of a bad mental frame, and when I finished I went inside and sent out a few hundred applications Over the next several weeks, I spent a lot of time that wasn't…
Gets me outside and moving, accomplishes something tangible, can catch up on a podcast or two or just get lost in my thoughts, often leads to fixing other odds and ends around the house I've put off.