Commentary As of 2016, China’s empty apartment units could house New York City 27 times over. What does this mean to you? There are a lot of carry-on effects from wasting so many resources. As you delve into a thought exercise to get more acquainted with the ruinous consequences of credit bubbles, be grateful that you don’t really have to worry about malicious genies magically tagging you with mortgaged deeds. That could be scary. Imagine that some cruel genie took a perverse dislike to you. What worse instance of malevolent magic could the genie perform than to present you with deeds to the astonishing inventory of 70 million empty apartments structures accumulating dust throughout China. You might think it would make you a billionaire, a real estate magnate on par with Donald Trump. But think again. This may be a good moment to retell an uncharacteristically charming story Trump told …