You can all laugh
Back in the late 60's early 70's nearly all window cleaning was done by ragging - just one scrim, washed and wrung out almost dry.
Skilled shiners (with muscles like Popeye) could clean a window spotless in not much more time than it would take the average WFP man.
Every few windows he would dunk his scrim in his bucket and wring it out again, crack it like a pistol shot, shake it out and carry on.
Couldn't do it today, no such think as REAL scrim anymore.
Larger panes like shop fronts would be (grudgingly) squeegeed.