The lessons from Canada’s attempts to curb its house-price boom

IN MATTERS of finance, if not climate, Canada is usually temperate. It was barely moved by the economic storms that blew the roof off America and Europe in 2008-09. Its banks were steady, it was argued, in part because they were shielded from the ferocious competition for market share that pushed banks elsewhere into hazardous loans. For all that, in its housing market Canada has lately become a place of extremes.