The nature of language, and of accents, is for them to change, he said.

BBC: By BBC News Online's Liz Doig

When Matthew Engel wrote here earlier this month about the impact of American English on British English, he restarted a debate about the changing nature of language which ended in dozens of suggestions from readers of their own loathed Americanisms.

BBC: Viewpoint: American English is getting on well, thanks

Puppet has followed the evolution of most declarative systems such as HTML or SQL. At first, basic needs could be expressed in the declarative language, but as the nature of the work being performed became better understood, the declarative language became more powerful and could describe more complex and sophisticated results.

FORBES: Why Adopting the Declarative Programming Practices Will Improve Your Return from Technology

Unlike IBM's Deep Blue chess project in the 90s, which was pretty much pure math, Watson has to deal with the natural language and punny nature of real Jeopardy questions.

ENGADGET: IBM demonstrates Watson supercomputer in Jeopardy practice match

The nature of the principles of universal grammar limits what can count as a natural language grammar.

FORBES: Morality: Nature or Culture?