==Summary==
Between the 19th of February, 2020, and the 23rd of March, 2020, the S&P500 ([https://finance.yahoo.com/quote/%5EGSPC ^GSPC]) fell from 3,386.15 to 2,237.40, using adjusted closing prices. It subsequently climbed back to 3,276.02 on the 22nd of July, 2020. Some people seem to think it will keep going. I expect a massive crashretrenchment.
To predict the characteristics of the 2020 stock market crash, I propose examining the market using three techniques: