Tradeoff between expressiveness and performance

• Perlis epigram #54: �Beware of the Turing tar-pit in which everything is possible but nothing of interest is easy.�

  • http://www.cs.yale.edu/~perlis-alan/quotes.html

• We�re not talking about computability in this class

  • In principle, you can (somehow or another) write any program you care about in any programming language

• We�re talking about effectiveness

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