Darwinian vs tractable

Darwinian

adj
  • Exhibiting an ability to adapt or develop in order to survive; adaptable. 

  • Of or pertaining to the scientific views advanced by the English biologist, geologist, and naturalist Charles Darwin, especially his theory that living organisms evolve through the natural selection of inherited variations that increase organisms' ability to compete, survive, and reproduce. 

  • Competitive, especially in a ruthless manner. 

  • Of or pertaining to Darwin, the capital city of the Northern Territory, Australia. 

  • Of or pertaining to Darwinism, which includes the theories of Charles Darwin and other scientists. 

  • Of or pertaining to the philosophical and scientific views, or poetic style, of the natural philosopher, physiologist, and poet Erasmus Darwin. 

noun
  • A native or resident of Darwin in the Northern Territory, Australia. 

  • An adherent of Charles Darwin's theory of the origin of species, or of Darwinism. 

tractable

adj
  • Capable of being easily led, taught, or managed. 

  • Easy to deal with or manage 

  • Capable of being shaped; malleable. 

  • Sufficiently operationalizable or useful to allow a mathematical calculation to proceed toward a solution. 

  • Algorithmically solvable fast enough to be practically relevant, typically in polynomial time. 

How often have the words Darwinian and tractable occurred in a corpus of books? (source: Google Ngram Viewer )