People have selective perceptions and memories.
From these incomplete reservoirs of information, we make deductions and conclusions about the world around us. A lot of the time, this process is adequate to our daily lives. Sometimes, however, we need to recognize our inherent limitations and dig into data with rigor to avoid real problems in life. The technology sector of the stock market has been surging ahead for many years now. Some stocks find their roots in the late eighties while others have been with us for only a few years.