[wrench]

Don’t try to catch a falling knife.

[RayChuang88]

I'd almost agree, but too many investors got burned not because they lost their money from the 1929 crash, but because they didn't take advantage of buying stocks and real estate at what amounted to fire sale prices in the early 1930's. That's how one Joseph P. Kennedy made his gigantic fortune, buying stocks and Manhattan real estate at highly depressed values and selling them for immense profit by the late 1930's.