Of course, the record is full of people who make money for years, only to explode later on (look at John Meriwether's career up until Long Term Capital Management blew up so spectacularly). Were these people always just lucky? We can never know.

If the best win at a rate of 60% and worst at a rate of 40% , plenty of the best will explode later on.

Also an irony worth pointing out- Randy Mills of Blacklight Power/Hydrino fame has tried to create credibility for his company by pointing to the savvy investors who did get in board.

The point is that knowing some physics protects you from the likes of Randy Mills. So you do a bit better than mere luck. Also, if you're a so called savvy investor, and you invest into some crap like hydrinos, you may even get gains (if you sell after others jump onto the bandwagon just because you did).