>> Person A was born in 1930. Person B was born seventy years later, in 2000. They both start applying the Graham investing strategy at a very early age, let’s say when they were 15 years.

>> Person A becomes Warren Buffett, once the richest man on earth, who experienced one of the biggest booms in value stocks when he was young. Person B loses half of their money because value stocks are out of favor in the 2010s

Buffet started when he was 10, not 15. His net worth is 97.8 billion dollars, 97.5 billion or so of that was earned after he was 50 years old. His success or failure was not due to whether stocks were in or out of favor in his first 5 years of investing.

If you want to be extremely rich, set aside the next 82 years of your life to do nothing but work on that, and you should have a pretty high rate of success.