There are currently an estimated seventy million empty high rise apartment units in China, for example, because under the baleful influence of unlimited credit these apartments were built for asset appreciation, not occupancy. In fact, most of China’s tens of million of punters who have invested in these units have taken pains to keep them empty and spanking new; like contemporary works of art, appreciation potential can be impaired by marks and scrapes.

Needless to say, there is a huge problem when you turn rebar, concrete, and wallboard into tulip bulbs. Namely, when the price mania finally stops not only do the speculators who put their savings into empty apartment units get crushed, but, more importantly, demand for new units quickly evaporates, causing a devastating contraction up and down the building supply chain.