Black Swans or Gray Rhinos?

In recent years we've heard the term "Black Swans" to describe events like the 2008 real estate crisis: events that are supposedly not foreseeable. Policy strategist Michele Wucker's TED Talk urges us to replace the myth of the "black swan" - that rare, unforeseeable, unavoidable catastrophe - with the reality of the 'gray rhino,' the preventable danger that we choose to ignore. She shows why predictable crises catch us by surprise - and lays out some signs that there may be a charging rhino in your life right now."