http://mathworld.wolfram.com/topics/RecreationalMathematics.html http://en.wikipedia.org/wiki/Recreational_mathematics Recreational mathematics is an umbrella term for mathematics carried out for recreation, self-education and self-entertainment, rather than as a fully serious professional activity. It often involves mathematical puzzles and games.
http://jtauber.com/blog/2006/03/11/recreational_programming/ http://www.intertwingly.net/blog/2006/03/11/Recreational-Programming https://www.google.com.ng/search?q=recreational+computer+programming (у меня в related searches - ruby programming ideas :)
Основная мысль в том, что есть понятие recreational math, и следует ввести в употребление понятие recreational coding.