Credit for this gem goes to the Glasgow University press office (http://www.gla.ac.uk/news/headline_388852_en.html), with a nice spin added by the BBC (http://www.bbc.co.uk/news/uk-scotland-glasgow-west-30944584).
From the BBC: “Complicated? Oh yes. Which is why the researchers say it might help to think of a bicycle race.” Don’t worry your pretty little head about these bothersome physics, stick to fun things like sport. But in all fairness, a peloton does tend to slow down when it collides with a Spatial Light Modulator, or any equpiment attached to an optical table for that matter. . .