There's always a lifespan on information, including advice or other forms. For example, shouting "Fire! Get out!" - the advice is very good for that moment - if

There's always a lifespan on information, including advice or other forms. For example, shouting "Fire! Get out!" - the advice is very good for that moment - if it's true. With business and marketing advice the timing is mostly susceptible to market cycles, which for a lot of fields are generally in the 18-months to 4-years range; by the time 4 years have passed, a whole new cohort has completed college education, the political landscape has shifted and a lot of people have made some change in their lives - the party is over and you have to find new opportunities to hit big. It's not just that too many other people follow that advice, it's that it has become a competitive field in its own way, and often subject to forces that favor an incumbent. So you can't actually get in, or you'll experience headwinds that push you down the ladder. This is true with specific products and services, with career paths, and with categories of assets. The very best advice is just general wisdom, proverbs, old life philosophies, etc. It needs study and interpretation to feel applicable to current events, but if used well it can reveal an opportunity early on.