Speaking of which, Estonia recently implemented a "no legacy" directive [1], under which all government systems will be rewritten from scratch at least every th

Speaking of which, Estonia recently implemented a "no legacy" directive [1], under which all government systems will be rewritten from scratch at least every thirteen years. They are taking the stance that a good implementation will last around a decade, not less, but also not much more. [1]: http://www.ozy.com/rising-stars/taavi-kotka-is-putting-the-e-in-estonia/32101 http://www.ozy.com/rising-stars/taavi-kotka-is-putting-the-e...