Frank Field's latest contribution to the DRM debate - DRM is a folding chair.

"Here’s the real point – the folding chair really draws its effectiveness from the cultural norms that have built up around
it. An experienced Cambridge driver knows not to mess with a parking space that has a folding chair in it, even though she/he
has never experienced the consequences that I describe above. Speaking personally, I can’t name a single person who has
actually had this problem, but every Cambridge resident collectively knows that it would happen — even though a folding chair
is, practically speaking, a completely ineffective limit on the use of a parking space."