This has become my favorite topic of late, and it is becoming more and more evident to me that less people know about this set of disciplines than should. It seems that a large number of IT people claim to be experts in some area of IT after just 1 or 2 years of experience. Let me just state that I do not claim to be an expert in any area of IT, even after being performance testing for 23 years. I learn something new each day and I often learn from other people the most. There are no experts, just people with varying degrees of knowledge, who decide to specialize in a particular area or discipline (Specialists).