Earlier quoted context omitted.
A thought experiment: Say I have a database with 1024 e-mail addresses. I split them in two groups. I send an e-mail to 512 of them saying "tomorrow, IBM is going to go up". To the other 512, I send an e-mail saying "tomorrow, IBM is going to go down". The next day, IBM is up, and I discard from my database the 512 people to whom I've just sent an incorrect stock tip. Then I repeat. I send an e-mail to 256 people say…
Except Buffet has been emailing everyone every year since 1962; unless he has a way to pick branching timelines.
Now that would be a skill that would set you up for success!