The moral of the story: Let's not rely on the market's historical average return to buy-and-hold ourselves to presumed safety. Buy-and-hold is not an effective risk mitigation strategy (and neither is diversification, for that matter..
http://www.zerohedge.com/news/2018-03-10/spitznagel-blasts-buy-and-hold-its-more-hope-prayer-here

Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.