The artist Martin Creed has a new installation on display in the Tate Britain.  Work No 850 is a single athelete running through one of the galleries at top speed - once every 30 seconds.  "They are running urgently, says Creed, "to complete the work."  What work?  The runners - or the running - is full the extent of Creed's intallation. 

If you feel like running in the Tate, you should first apply to the exhibition admisinstrator.  You get £10 an hour as part of the relay team (and apprently they're short of applicants).  If however you turn up on the spur of the moment and start running for the joy of it, for free, you are likely to be stopped by the gallery's unifromed security staff.  "Running is not allowed in the galleries" explained Creed, who came up with idea by - running round a gallery abroad.

An installation is a tame version of what in the sixties we used to call a "happening".  A real happening would be if a gang of us all turned up at the Tate in running clothes and ran round together, daring the security staff to indentify the only paid, and therefore legal, runner.

Somehow I feel there is a connection between this story and the one immediately below.