Don't argue with an economist

We were having some enjoyable office banter today at the expense of a colleague who drives the pathetically short distance from Tollcross to the office. Clearly, he'll be first against the wall when the revolution comes, but being an economist, he points out that once you own a car, the marginal cost of driving it somewhere is trivial.

As if to back him up, the buses have been irritating, overheated, crowded and generally rubbish for the last few days. Tonight there was an unreconstructed drunkard on the back seat of the 30, singing sectarian songs and being ignored by all the sweaty office workers.