Extrapolations.

Property assessments are out now and we've seen an astonishing 25% increase in prices from july to july. If we extrapolate those gains into the future we'll see an average home price that is 8,000 times the average Vancouver income before too long!

On the other hand those assessments are six months old and if we were to extrapolate the price change month over month based on the last months price reductions we'd see the average house sell for twelve dollars in just a few years.

Extrapolating is tricky business!