The number one rule in economics is that economists nearly...

The number one rule in economics is that economists nearly always get their predictions wrong. (Which probably means that logically this rule must be wrong. Try figuring that one out.)

The number two rule is that stockmarkets nowadays are always irrational. (This has come about due to a huge amount of wealth now being held by morons.)

There would appear to be some logic in assuming that there must soon be a major reverse - because it would be irrational for this market to keep going up and up. However, markets are now irrational.