Let's say I'm a hotshot trader who everyone wants to be. (Hypothetical... I'm not OK... don't critisize me with the example) At one point, I give out my trading system to everyone out there. As a result, the market catches and my methodology doesn't work. By that time I'll have another strategy for the changed market condition.
A trader needs to change or adjust based on the market condition. I think it's what a trader needs to survive in this business in the long run.
I'm not saying I'm very good at it or can do it better than others. I always try to keep that in mind, trying to be changing at all times for the better.
I've got a long ways to go though...