Could There be a Repeat of the Oct 1987 Stock Market Crash?

Nobel Laureate Robert Shiller consider the possibility of a repeat of the famous 1987 stock market crash

https://www.nytimes.com/2017/10/19/business/stock-market-crash-1987.html

Related:

https://www.washingtonpost.com/news/wonk/wp/2017/10/20/americans-are-giddy-about-stocks-again-as-dow-tops-23000/