The theory is that the DJI will retest 10,000 within weeks or some months (currently DJI 11,000). After an unheard of 70% gain in 52 weeks it makes sense to lock in gains and thank the Fed for free money. I speculate that the next big correction in the stock market will originate from an export crash in China, most likely from when they tweak cny/usd the wrong way. China property crash will follow. Trade war conditions have developed; Google leaving China in the way they did sends a message that is clear. They are well connected and know something. I sense not enough fear from the market so when the selling hits it's gonna hit 'em hard. Then again, the market could melt up to DOW 15,000, unemployment 6%, pump $3.50 gasoline, AAPL $750, and I'll be typing from an iPad next year.