Lifted from John D. Cook
[http://www.johndcook.com/blog/2010/03/03/just-in-case-versus-just-in-time/] and
Lifehacker
[http://lifehacker.com/move-before-you-re-ready-get-started-without-being-an-1654826130]
this concept tries to tackle the question of how we should allocate our