The stock market is the result of everyone looking at the ports and deciding that it's fine.

It's really hard to beat the stock market. It's the collected wisdom of everybody, including a lot of experts. Which I'm not -- I know nothing about ports, and while it sounds bad to me, I have zero experience.

Or... maybe the stock market is indeed obviously wrong. It happens. And if you're rational when the stock market isn't, you can get rich. Assuming you don't go bankrupt first.