What's the Difference Between Material and Non Material?

In the first modern economies, britain and america, around 18 twenties, we're just full of people tinkering and a experimenting and exploringand sometimes discovering new ways to produce. We are comfortable materially, but that's not what makes our lives so pleasant. I don't think it's part of it, but it's not reason. So my question is, is it? What portion of the American work force has such a life,. this life of challenge and change and interesting new things that come along at one extreme, versus the bolt theother, turning the bolt at the other extreme.