Milk delivery started in Vermont back in 1785, in glass bottles in about 1874
and stopped being delivered to a great degree in the 1960’s.  Or did it?

The milkman is still there, maybe  just wearing a different uniform?

But what has really changed?  People a still listen to music, travel in a car, fly in a plane, shop for groceries, send a letter, consume news updates, dine out, buy a book, or shoes…even a home.

Let me float a theory:  
WHAT we do hasn’t changed  all that much. HOW we do it has.