Don't confuse clarity with certitude. My post's premise advocated anything but certainty.
Quote from Avid_Consumer:
certitude?
Quote from FaderTrader:
The market doesn't repeat itself in this fashion.

Quote from ElectricSavant:
But past performance is not indicative of the future.
Quote from patoo:
The more we talk about 1987, the less chance it will happen that way.