Whether business or personal, physical or intellectual, realizing tomorrow’s opportunities requires making investments today. Some investments, such as a factory or a formal education, represent significant costs of both time and capital. The benefits are higher prospective returns over extended time horizons. Existing physical and intellectual assets need to be maintained with continuing investments as they age. Asset age is one measure of the vibrancy of capital. While average ages vary widely by category, age trends provide some indication of the adequacy of ongoing investment levels. Investments in physical and intellectual assets have implications for investments in financial assets.