Engineering emerges as the single most common use of Mathematica . Within engineering, electrical engineering is the most common subfield, followed by mechanical engineering. Second in the ranking comes computer science. The size of this segment is slightly inflated by registration cards received from people who are responsible for computers on which Mathematica is used but who do not themselves use Mathematica . Close behind computer science come the physical sciences.
Physics leads by a fair margin, followed by chemistry.
Theory and experiment, where they can be distinguished, appear to be about equally represented. In fourth place come the mathematical sciences. While it is true, as the marketing expert expected, that Mathematica is very popular among mathematicians, the number of mathematicians in the world is small relative to the total number of scientists and engineers. In fifth place come the life sciences, dominated by medical research. And in sixth place comes business, with financial analysis being the most important subfield.