Is buying an S&P 500 index fund really a good way to build wealth?

Yes, according to the guests in these videos, buying an S&P 500 index fund is a strong way to build wealth. A Boston billionaire-interview guest said the smartest people put their money in an index fund, and when pressed for a specific fund he named the S&P 500, advising people not to overcomplicate it and to compound wealth over time. Logan Paul's segment made the same point: invest early and confidently, don't speculate, and buy the S&P 500, which he said has returned about 10% a year on average over the last 100 years. A Philadelphia dentist-turned-investor pointed to Vanguard index funds held for decades, stressing that wealth comes from investing what you save rather than just earning more. A Wall Street guest added that staying invested lets compounding do its work.