predicting...time spent trying is time wasted...

"... if the smartest and best fund managers can't successfully anticipate a crash with any degree of confidence, you can't either. Time spent trying is time wasted...."

http://finance.yahoo.com/banking-budgeting/article/106158/The-Year-of-Wall-Street's-Fallen-Idols

 

Maybe they are not as smart as they thought they were?

 

give examples of trades that are not predictions.

 

^
x2

 

Difficulty on your part or their part doesn't mean impossibility on other people's part.