YesÂterÂday’s lackÂlusÂter AcadÂeÂmy Awards cerÂeÂmoÂny may have affordÂed you some unexÂpectÂed time for conÂtemÂplatÂing life’s more urgent quesÂtions, such as the one British comeÂdiÂan Alan Davies purÂsues above: How long is a piece of string? Watch Davies, who is also a freÂquent panÂelist on the popÂuÂlar Stephen Fry-hostÂed quiz show Quite InterÂestÂing, explore the ridÂdle’s philoÂsophÂiÂcal impliÂcaÂtions and inevitable conÂnecÂtion to string theÂoÂry with the help of physics, quanÂtum mechanÂics, and finalÂly a visÂit with mathÂeÂmatiÂcian MarÂcus de Sautoy. Fans of the Davies/du Sautoy interÂacÂtion may also want to check out Du Sautoy’s TED talk on SymÂmeÂtry, as well as the debates in that video’s comÂments secÂtion. More docs can be found in our colÂlecÂtion of 200+ Free DocÂuÂmenÂtaries, part of our largÂer colÂlecÂtion, 4,000+ Free Movies Online: Great ClasÂsics, Indies, Noir, WestÂerns, DocÂuÂmenÂtaries & More.