Exponential growth

Exponential growth occurs when the growth rate of the value of a mathematical function is proportional to the function's current value.

Quotes

 * Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist.
 * Attributed to Kenneth Boulding in United States Congress, House (1973), Energy reorganization act of 1973: Hearings, Ninety-third Congress, first session, on H.R. 11510. p. 248