IMHO:  Using the Stock Market as a measure of our economy distorts what is really going on, because it says nothing about worker income.

"What’s behind Wednesday’s market selloff?" PBS NewsHour 10/10/2018

Excerpt

SUMMARY:  A financial storm sent stocks plunging to their biggest losses in eight months.  The Dow Jones Industrial Average plunged 831 points.  The NASDAQ fell 316 percent.  Amna Nawaz talks about what may have prompted the selloff with Hugh Johnson, Chief Investment Officer at Hugh Johnson Advisors.  Johnson says it’s a “severe correction.”