After seeing the recent Nyancat drawing in the BGP logs, I got to wondering what kind of apps have been written, against all odds, in a totally wrong language than is suitable for their function? Like a BGP log is for graphic design.
You can use airline fare rules to encode a turing machine: <a href="http://www.demarcken.org/carl/papers/ITA-software-travel-complexity/img35.html" rel="nofollow">http://www.demarcken.org/carl/papers/ITA-software-travel-com...</a>