The question maybe a proverbial one thats applied to lots of different situations, but finding the real truth means that Alan has to seek help from some of the countrys top names in the fields of science and mathematics.
An encounter with leading mathematician Marcus du Sautoy reveals that Alan's short length of string may in fact be infinitely long. When Alan attempts to measure his string at the atomic scale, events take an even stranger turn. Not only do objects appear in many places at once, but reality itself seems to be an illusion.
Ultimately, Alan finds that measuring his piece of string could in theory at least create a black hole, bringing about the end of the world. How Long Is A Piece Of String? doesn't quite bring the answer he expected