Knowledge Worker...

I took a walk around the neighborhood today at 3pm. The street was quiet.

Middle of the day and I'm on my front yard.

Once upon a time (agrarian), you got paid for manual labor based on your output (say bushels of cottons picked).

Then, (industrial), you get paid for the hours of work you perform (say assembly line).

Now, you get paid for the knowledge you produce. Time doesn't matter. Can't be measured in physical terms.

A total paradigm shift.