No. Never. Even a financial genuis.
The rule of 72 means you take your interest rate and divide it into 72, and that's how long simple compounded interest will take to double.
Even if you say that $15,000 is all you need to live on a year, you'd have to start out making at least an 18% annual return on that money to account for inflation. To ever make that base $100,000 grow, you'd have to make more then that. So if for the first five years, you averaged a 30% growth (12% net after the 15k + 3k inflation) you'd have to make that for 10 years straight to even double your base principle.
Now if he were to go back in time to 1990 and buy $100,000 in shares of Dell, or Intel or even M$ft, then, Hell Yes
The rule of 72 means you take your interest rate and divide it into 72, and that's how long simple compounded interest will take to double.
Even if you say that $15,000 is all you need to live on a year, you'd have to start out making at least an 18% annual return on that money to account for inflation. To ever make that base $100,000 grow, you'd have to make more then that. So if for the first five years, you averaged a 30% growth (12% net after the 15k + 3k inflation) you'd have to make that for 10 years straight to even double your base principle.
Now if he were to go back in time to 1990 and buy $100,000 in shares of Dell, or Intel or even M$ft, then, Hell Yes