I agree with this. A little knowledge can be very dangerous. If you don't know anything about finance or the market and you had money to invest, you would likel

I agree with this. A little knowledge can be very dangerous. If you don't know anything about finance or the market and you had money to invest, you would likely invest in market ETFs. If you knew a little more, you'd be trying to pick stocks or industries. Eventually if you were very knowledgable and experienced, you would go back to picking low cost ETFs and realize you can't beat the market without an edge, and being very smart is not an edge. And I'll add that the "best" index fund is pretty much the broadest fund with the lowest fees. For example, Dow Jones only has 30 constituents while S&P 500 has 500, so S&P is broader