"Time and tide wait for no man" Geoffrey Chaucer
One of the most stimulating aspects of working in this industry (EDM, ECM, BPM & BPO) for me, is the constant rate of change. Technology matures, market tastes change, markets merge, new technology obliterates old technology and even sales techniques change as does the thinking of your customers. Therefore, what once brought you high levels of revenue may not now work. Just like the tide affecting the coastal landscape, then so does time have an effect upon the business landscape.