That's true, most people likely won't know what they're doing. But it's possible to spend some time, pick up something like The Intelligent Investor by Ben Grah

That's true, most people likely won't know what they're doing. But it's possible to spend some time, pick up something like The Intelligent Investor by Ben Graham, and invest a little yourself. Ordinary people can sometimes have investable insights that most players in the market are not aware of.