The Malthusian growth model now bears Malthus's name. Another early one developed by Malthus is the "population principle", now called the Malthusian principle. The modern representation of the Malthusian theory was developed by Qumarul Ashraf and Oded Galor. Malthusian ideas have thus contributed to the canon of socioeconomic theory. Massive geometric population growth in the 20th century did not result in a Malthusian catastrophe. He was also a believer in Malthusian economics. The concept has been embraced by those who argue against Malthusian philosophy. One group of economies in the Malthusian regime with very slow growth rate. Following attacks on "the essential fallacies of Malthusian teaching", Sutherland's book attacked Stopes. Some criticisms generally involve some variation of the Malthusian principle of population. It was additionally a critique of Malthusian views of the 1960s and 1970s. Mechanistics rejected the central feature of Malthusian thoughts on human progress motivated by population growth. The exponential nature of population growth is today known as the Malthusian growth model. In France, terms such as ""politique malthusienne"" ("Malthusian politics") refer to population control strategies. Malthusian theory is a recurrent theme in many social science venues.