Lot fewer man hours to build & maintain the equipment.
That's one of a myriad of reasons Keynesian stimulus / "shovel ready" doesn't work anymore.
We don't build roads with lots of manual labor anymore, and we can't build 'em to todays standards substituting manpower for machines if we wanted to.
Same idea, different trade is welding and submarines near me (Electric Boat). They developed a robot to make some of the more difficult/awkard to reach welds.
It being a machine can safely hold a much stronger arc then a human...so the Navy redesigned welds (basically from square to being on an angle so a greater surface area got fused together) to make stronger hulls.
Today's subs you CAN'T go back to using a human welder...they're designed using welds only a machine can make.
We could go back to spending like Reagan and only employ a fraction of welders, draftsmen, and many others whose jobs have become techonologically obsolete.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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