One unfortunate irony concerning the whole 'wobbly bridge' situation concerns the Arup engineer Tony Fitzpatrick. At the well-received press launch the team held to try to demystify some of the technology surrounding the bridge, Fitzpatrick chose to demonstrate its structure in easily understandable, layman's terms.
Unfortunately, given the bridge's behaviour ever since, he chose. . . a very springy elastic band stretched around his two index fingers.