Just so people remember history correctly:

1. The Roaring Twenties market peaked in August 1929 with a ~6100 Dow.

2. Market low in November 1929 at ~3800, a ~38% drop. The "big crash" was just ~4400 to ~3800.

3. Then it RECOVERED to ~4700 by March 1930, a ~24% gain.

4. It then dropped over a year to ~3000 by March 1931, a ~37% drop.

5. Then the real crash to ~900 in June 1932, a ~70% additional drop.

People had a LOT of time and a LOT of additional information about the economy to decide to get their funds out of the market.

I have finally drilled into my skull that I am unable to time the markets with reliability. So I hold across corrections. In 1930 I wouldn't have done anything -- I wasn't born yet.