I have yet to see a strategy that passes this simple test: does it also work if there are other people, most of them more knowledgeable about the market than yo

I have yet to see a strategy that passes this simple test: does it also work if there are other people, most of them more knowledgeable about the market than you, applying similar strategies? Also, "Why I don't trade stocks and neither should you": https://news.ycombinator.com/item?id=6831461 https://news.ycombinator.com/item?id=6831461