Is infinite economic growth a fantasy? Or is the fantasy the idea that we are quickly using up the Earth?

In his recent book, “ Stubborn Attachments ,” economist Tyler Cowen offers a brief thought experiment meant to illustrate how seemingly tiny differences in GDP growth rates generate massive wealth differences over time. What if, Cowen asks, the US economy grew at one percentage point less annually from 1870 through 1990?

Source: Is infinite economic growth a fantasy? Or is the fantasy the idea that we are quickly using up the Earth?