Not because natural resources or environmental necessities might not at some time pose a limit, not on growth, but on the level of economic activity—I didn't think that was a nonsensical idea—but because the Club of Rome was doing amateur dynamics without a license, without a proper qualification.And they were doing it badly, so I got steamed up about that."[28] However, in 2009, Solow suggested that "Thirty years later, the situation may have changed.It is possible that real demands on natural resources, and therefore on the natural environment, will be dramatically different in a world in which India and China, and other countries, too, grow at 8 or 10 percent a year, and need to pass through the material-goods-intensive phase of growth before they arrive at the service economy... it will probably be more important in the future to deal intellectually, quantitatively, as well as practically, with the mutual interdependence of economic growth, natural resource availability, and environmental constraints.