Numpy

Download this notebook There is a story about a man who got stuck in quicksand and would have suffered a horrible death, but he managed to pull himself out of the sand by his boot straps. In German, Baron von Münchhausen had a similar story about how he pulled himself out of a swamp by his hair. Obviously, all of this is nonsense, but it coined the name of a statistical method - Bootstrapping - that seems to be similarly ludicrous, but actually works and is insanely useful for many otherwise difficult situations.