Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

What are some signs that the stock market might crash? 
Although it is impossible to predict the next stock market crash, what   are some signs or measures that indicate the economy is unstable? These questions are really two sides of the same coin.  As such, there's really no way to tell, at least not with any amount of accuracy that would allow you time the market. Instead, follow the advice of William Bernstein regarding long-term investments.  I'm paraphrasing, but the gist is: Markets crash every so often.  It's a fact of life.  If you maintain financial and investment discipline, you can take advantage of the crashes by having sufficient funds to purchase when stocks are on sale.  With a long-term investment horizon, crashes are actually a blessing since you're in prime position to profit from them.