^Even at the WTC, which used a window washing machine, they still had human window washers do the windows of the observatory and restaurant, because human window washers do a better job than the machine. For office floors, that's not as much of an issue. But in places where people are paying for the view, it might well be.
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"Build me to the heavens, and Life never stops"
"Live as if the world were as it should be, to show it what it can be"
-Angel
"Prayers are fleeting and wars are forgotten, but what is built endures"
-Ambassador DeLenn, Babylon 5
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