Skyscraper Index

Apparently there is a correlation between the building of really tall buildings and the business cycle:

The skyscraper is the great architectural contribution of modern capitalistic society and is even one of the yardsticks for twentieth-century superheroes, but no one had ever really connected it with the quintessential feature of modern capitalistic history—the business cycle. Then in 1999, economist Andrew Lawrence created the “skyscraper index” which purported to show that the building of the tallest skyscrapers is coincidental with businesscycles, in that he found that the building of world’s tallest building is a good proxy for dating the onset of major economic downturns. Lawrence described his index as an “unhealthy 100 year correlation.”

This website would seem to be a bad omen.