In stock photography--as in life--change is the only constant. It goes without saying that technology and innovation have a huge impact on all of us. At the end of the day, technology and innovation perpetuate our ability to lead better, longer and healthier lives. But acceptance of new technology and change does not always come easy. While some new technologies can peacefully coexist with their older siblings for decades, others-like the internal combustion engine, the light bulb or the cotton gin-quickly and completely make obsolete the technologies they were intended to replace.