Assuming 10% interest is not realistic. The inflation-adjusted rate of return of the S&P 500 is 6.8%. Plus, the inflation rate of what it costs to train doctors

Assuming 10% interest is not realistic. The inflation-adjusted rate of return of the S&P 500 is 6.8%. Plus, the inflation rate of what it costs to train doctors has gone up at a much higher rate than the overall consumer price index.