4 kinds of stock market "experts"

there are 4 kinds of stock market "experts" :-

1) those who have explanation of everything BEFORE the things have happened but are WRONG,

2) those who have explanation of everything BEFORE the things have happened and are RIGHT,

3) those who have explanation of everything AFTER the things have happened but are still WRONG,

4) those who have explanation of everything AFTER the things have happened and are RIGHT!

While the first types are honest Amateur "experts", the second types are Mature "experts", the third types are Immature "experts", the forth ones are plain fakes!