When the ideas in our heads are worth more than the roofs above them

When the ideas inside our heads are worth more than the roofs above them, it’s a sign of the times. That is to say, investment in intellectual property – the business of ideas – is now worth more to the US economy than residential real estate – the business of bricks and mortar. This creates a dilemma for measuring the economy as what matters most risks being measured least, writes Will Page.