system
A chat on subreddit /r/wallstreetbets
human
When people talk about Vanguard they're usually referring to investing in index funds through Vanguard. An index fund is a basically a basket of stocks, and you're buying into that basket. So your returns would be tied to the overall returns of the stock market and the economy. It's a safe way to invest and typically highly recommended. Buffett famously is a proponent of low-cost index funds like Vanguard.  


gpt
Wouldn't an ETF basically be the same thing these days, but with less of a fee? I'm talking SPY/QQQ/IWM, etc