We Live in a Dynamic World
We live in a dynamic world where everything is in flux. Nothing is fixed or static. Things change. The last century has seen an exponential explosion of technology and science in every discipline. From the invention of usable rubber (vulcanizing), airplanes, cars, etc… In our lifetime alone, we have seen the obsolescence of vinyl records, eight track cassettes, reel-to-reel tape decks, cassettes. With flash drives getting faster and cheaper, we will eventually store all our music and movies in chips no larger than our thumb nails. CDs and DVDs will soon join this obsolescence.
The cell phone has evolved from a brick to a smart device that for most people replaces the need for a desktop computer. The cell phone will eventually be the embodiment of our wired personas synching with our cars, TVs, desktops and appliances. It will one day announce our arrival at public venues and connect us in ways we never imagined possible. We now have access to the sum of human knowledge immediately at our fingertips.
Why is dynamism so important in SEO? Because we are competing in relative markets spaces with dynamic competition that is in the process of improving their rankings. Sitting on your laurels is a dangerous practice. Think of it like walking up a down escalator.