They didn't believe that Tebow, a guy whose passing mechanics have been compared to those of a Medieval trebuchet, was capable of beating them through the air.

WSJ: NFL: How Tim Tebow Beat the Steelers

They've spent months working with the community in Govan to create a piece which will involve firing language across the river, using unusual or obsolete technology - everything from choirs to flags to medieval catapults (their trebuchet is well under way in a nearby lockup).

BBC: GI festival keeps pushing boundaries